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„Bremer Rathaus“ by Andreas Steltner https://www.flickr.com/photos/asteltner/4964195286/in/album-72157604342270506/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Die Giebelhäuser“ by Andreas Dantz https://www.flickr.com/photos/szene/8587645550/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„IMG_9498.jpg“ by Tomasz Dunn https://www.flickr.com/photos/tdd/24998941795/in/photolist-E657rR-uQ5iF5-ox9FGQ-9e2ktF-o9MVjx-o1yHEr-rzfoHW-kTPz1-w7eguD-rjYpks-qEKw3n-punq17-a4tTAS-dexYtg-mJ9gZw-nGhFsW-ykNdiL-wncXjD-wncZy8-sfWro6-wnd33g-x4Dc2F-dbi7U4-a4tT79-s1ViKL-7u639i-a4r2v6-a4r1tv-b38yPc-dbi7Gt-pBBbwx-mJ7KUc-dbicRh-E64Jwg-7u9Xru-qFbae1-nYEinY-toobS5-nYErmU-7u9XXU-paMDFf-kkx5zX-oGkkXR-5ZV8mc-nGhJfD-cBb8hG-7u63E8-f8Nk8e-ofJZsb-kkxhgT is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Frankfurter Skyline“ by Kiefer https://www.flickr.com/photos/xingxiyang/13712970983/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Köln“ by Martin Weinhardt https://www.flickr.com/photos/eine_minute/8513192691/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Köln“ by Bert Kaufmann https://www.flickr.com/photos/tonirodrigo/6952629582/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Berlin - Reichstag“ by Reinhard Link https://www.flickr.com/photos/129472585@N03/15249103204/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Brandenburger Tor“ by Anfuehrer https://www.flickr.com/photos/planetbene/5537032004/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

"Hamburg, Germany" by Nick Scheerbart https://unsplash.com/photos/QmemudqzrXQ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Cathedral in Erfurt; Dom in Erfurt“ by Mark Michaelis https://www.flickr.com/photos/mmichaelis/10155399985/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Siegestor - München - Nordansicht“ by digital cat https://www.flickr.com/photos/14646075@N03/3766937936/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Frauenkirche“ by John Morgan https://www.flickr.com/photos/aidanmorgan/7258379606/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Dresden“ by Bert Kaufmann https://www.flickr.com/photos/22746515@N02/2951084683/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Düsseldorf-Hafen“ by Chris Yunker https://www.flickr.com/photos/chris-yunker/13887423176/in/photolist-nabF5C-8jVDXt-7BkPU9-f6WTFS-ez2UJX-kFgNHB-9aWZNB-9mPWVi-9aWYwV-eiwkrX-7qAzoF-cBGUG7-a94Duy-9b18xG-6Dia8b-7BkRiu-RawkPE-ivziG-TBjvRb-dAwqbZ-ntHwpq-FezYP-cUB42m-7WqsjT-i9H3pY-4ru4pu-7iVHVM-49we3p-nabmrw-cBGSDS-9b187m-GTASe-7BkRJo-cf2cjU-9b1DfS-5LeQzW-4KJfKG-hVw5Uj-j9Sf7E-7qEw4m-7Bh1yk-neEyKv-pizEzW-G16Xj-cG9p6j-gPpDK-ez3S7U-MtCRp-numSGH-7t2Mrc is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Dom und Severin-Kirche, Erfurt“ by Steffen Zahn https://www.flickr.com/photos/steffenz/17368307746/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„dortmund.“ by Holger https://www.flickr.com/photos/themightycondorman/8336804089/in/photolist-dGGipx-oXu77C-oww4rP-nxcH3R-peAAWj-hxBjtT-mZtcAT-opeHct-nnXYAW-mEfAxV-mAetqf-o1FVUt-mDWt4e-ksXPQf-oFsQqM-beuYJp-or2WBB-bc2NQB-oFGT4P-or3kiM-dMHzxK-dMHzGa-mTVisM-mKCZE4-xUrMs-oDGzq5-oFuRUu-bcRBtM-dMP8QA-9HCM92-bJRJ9k-beUggv-opgFDT-dMHxqr-9DsdbT-oHuVN5-gjwtk-bhsKzF-oFHJVc-dbgXrN-jukSRe-pyPdbf-gdbjZ5-oDJ1c7-bm4PWf-bsnQyK-btKVWR-9ZXAMd-jumUbg-fh5i5K is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Halle (Saale)“ by Øystein Vidnes https://www.flickr.com/photos/oysteinv/8147372368/in/photolist-qrdcmY-qc3Est-pwuWHG-qtuoEz-qtqNtG-qc3EBX-ndUpRR-qc5ds6-qbVFcs-eZRKPy-aeA6JP-dnakLg-pwuX53-hU5sD6-hU5nAd-hU4fJi-o1no3F-hU4L2N-qrdcU1-h8GB1g-hU4ZLG-mmdL2X-hhRurU-qrddWS-o1mv2c-qtjp9g-qbVFC7-qc5cZx-qbWsX7-afvkws-7ij9Uf-dpeiJM-7j48vY-ac96fQ-696wnz-omDQCT-pwuETA-dSu6JY-pwJejv-o1xZEW-nYBcH1-nJbcp1-7ZehFc-nYC6jN-dpXpXo-o1EDRe is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Essen, Gildehofcenter VI“ by Christian Schnettelker https://www.flickr.com/photos/manoftaste-de/14479313232/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Neues Rathaus“ by Roel Hemkes https://www.flickr.com/photos/rhemkes/8535265898/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Der Kleine Kiel“ by Steffen Voß https://www.flickr.com/photos/kaffeeringe/3592801415/in/photolist-6tu3FZ-7KQPQp-7JZiLT-7K4ech-cgEt61-7Lr3ok-e699md-7KUNjJ-bYK7dY-bnREoN-dTk1RL-bnDohH-bGLnxV-9KbmWU-bmN5E3-79K6nE-dciVoY-2XRUkn-dBpYdx-bo22wC-dstiDX-7JZksc-EG9etu-9GGQey-2MpiSR-u9r7e-77MXqt-bxDgKp-8A6wH6-cfpsMj-7K4gG3-7K4g6h-ftSQDo-7JZkd6-cLd9WU-9JsNQd-bnrH4L-azMtZg-7k26Jo-azQ91o-btLFte-dn2hfs-ftC8SH-ftCpKt-fAt3Us-ftCe1t-dpySGz-agC5Qj-9KWEpn-6tu7Tz is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Leipzig, Bundesverwaltungsgericht am Simsonplatz-1“ by Polybert49 https://www.flickr.com/photos/poly-image/14885487852/in/photolist-oFo1Wh-oJhAPr-oz2KJr-pwSmrM-c8XmQU-oyeVfM-obK8Dc-o7kiB1-oqcjau-pziWop-9PGwev-oWvHBg-ovKgsa-oKs4gp-avy1im-oofeU9-or7Kab-smNvtP-oGi2Tb-o8aRun-nWFRMB-pbnPtF-omPPMy-pfaJH1-8LbUaG-jC7dfL-psACU4-aX7Tot-awZ5ur-pmBDsk-qBtdbt-8K5iZY-8BpNhB-pLs2S9-apNHF5-nEuHZi-nWFW2t-sVK56Q-nWToDC-zkXsBC-RW1nh-5ftYUn-5fxYBb-9PGw44-85qGJM-q5yf7n-of5TzT-4tpv8F-dmbX68-btbNyC is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Mainz Panorama 2“ by Milestoned https://www.flickr.com/photos/baccharus/5677216740/in/photolist-9DFdKf-7PpoZq-aBxGsJ-cMBqHf-7Ppqdd-7PpspW-ajDi1Y-ajAwfx-erZ2Cs-diyUGs-7PkqkH-7Pks5i-dw9cXu-ajAvZk-ajAv4K-ajDh7q-ajAupH-dgbqez-ajAui6-ajDiZu-divgs6-diviWB-7m9tSi-dTtMVo-FUwB5G-gxjDY-7mdmP9-9ZgfMf-9Zgf1N-ajAwaX-ajDhPS-dgbqrQ-ajDhH3-ajDijC-ajDj7E-ajDfCQ-ajAw7e-ajAubp-dgbna3-ajDieJ-ajAuDM-axfAxn-ajDgUj-4MMF8f-dw9fad-cTDKsf-aHg5N-kTM1E-9DChoT-aHfa1 is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„luisenplatz“ by rey perezoso https://www.flickr.com/photos/reyperezoso/21773433220/in/photolist-zb3x83-nuwAcq-QeZFg-e5iXXP-nuuBD8-anz96o-batJta-nd11w1-nsrYxm-8me2AZ-c4CmsL-9AoLT2-9ArKBf-9ArZ7U-9Bk8Cs-59igS5-6hHA3i-qgtuJB-aqWWs-CL9Dz-5jBqrG-anwjVv-afDfrf-8j45Zr-pr4fAR-wxrK4b-Jm3kLZ-6RkomK-8ru1AB-9Bhqjg-9Ap2ZT-9Cd4Zg-J7HCJE-hMvhCu-qxQd9h-aqVUE-wgCJGR-wvPgPU-vBgjn2-bEpsr9-bSMmV8-HHQnAL-FALfdM-FhwiGW-bEerc9-bFAZNz-5amX3w-bSMkfr-bCHpTW-6rdewz is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Hanse Sail 2009 - "Mitsegeln" auf dem Dampfeisbrecher Stettin“ by yetdark https://www.flickr.com/photos/yetdark/3812394437/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Saarbrücken view V“ by Till Westermayer https://www.flickr.com/photos/tillwe/9628175467/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Königstraße, Stuttgart“ by Alexander Johmann https://www.flickr.com/photos/alexander_johmann/171960961/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Kurhaus am Morgen“ by Mario Micklisch https://www.flickr.com/photos/fvfavo/17343664819/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Panorama - Bremerhaven“ by Axel Schwenke https://www.flickr.com/photos/schwenke/14914711582/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„DSC_0079“ by Jim Kelly https://www.flickr.com/photos/pthread/6086349897/in/photolist-agQ8Mc-7HYmva-agPGzH-7J3pBw-7HYokr-7HYrYZ-7HYpEB-7J3h7J-7SpWax-a6xvq4-7J3iwo-7J3gQJ-agPZv8-7SpVYM-7J3kMW-dozyw-8v7pHT-7HYrmV-a6xvw4-6UKmFF-7HYrFR-7YEMxh-agSheU-a6xwoZ-bvwtc2-jN9Uo-sn5tY9-agSHz7-7HYsge-54A7HW-7J3hCY-7J3otm-a6An1N-8ziuCe-rX4xk-7Zz5d1-auKqS8-agQau4-a6AmSw-a6AmG3-a6xwxp-agSBR7-7YBEv4-a6AoQh-agQ7oT-7J3o8j-bvwyri-a6xxBv-agSfuu-a6Ap3J is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„still life, three objects“ by kenji ross https://www.flickr.com/photos/grenade/52167486 is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„No Smoking, please“ by Lars P. https://www.flickr.com/photos/lars_p/4467331101/in/photostream/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Living Room“ by Jeremy Levine https://www.flickr.com/photos/jeremylevinedesign/4329848151/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Bochum“ - Stadt Bochum, Referat für Kommunikation

„Bielefeld-Panorama“ by shardik https://www.flickr.com/photos/shardik/331272042/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Tiger & Turtle - Magic Mountain Pano“ by Felix Montino https://www.flickr.com/photos/felixmontino/7442327704/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„2012-11-01 Münster 067 Altstadt, Schloss-Universität“ by Allie_Caulfield https://www.flickr.com/photos/wm_archiv/8333654450/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Bonn Botanical Garden“ by Martin Hedegaard https://www.flickr.com/photos/martin_hedegaard/2875420720/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Nürnberg“ by Lars Steffens https://www.flickr.com/photos/larssteffens/9529790263/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Wuppertal Schwebebahn“ by Axel Schwenke https://www.flickr.com/photos/schwenke/4275247462/in/photolist-7vML89-yaK6ci-AvATtg-7vHTkK-5nRBWU-7vMNvy-5nRyJ5-oZPvQG-7vMLXs-sLEBsh-sJAdrG-52TjHY-7vMMm9-96EJpk-sLVu9n-52TfwW-oZLrmN-7vMLpE-7vHVAP-7vMHDo-7vMJXS-efZMQP-sLRbQD-sLDxNq-oHj8hp-5fNSUd-6pPzrJ-oHisHx-dSovhk-7vMKPs-7vHUPH-7vHUit-7vMMF9-etqXtR-oojNGP-dUU2aV-uCURWU-52Tem7-sLQGea-efZJce-dUUbdr-dUU6pT-eiBpiu-vzVcct-nbee3a-nbeaHj-ndgwJR-ndgUxF-ndhevZ-nbeckN is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Doppelbogenbrücke über den Rhein-Herne-Kanal“ by alex.ch https://www.flickr.com/photos/alex-photos/11107228626/in/photolist-hVvs6Q-2Nnhwy-2Nn2gq-2NhS5T-2NnfQC-2Nn2Pu-2NhJ6g-2NhKax-2NhPTn-2Nn8XW-2NhSDn-2NneL7-2Nnfhy-2NhPkx-2NhD4V-sKjY65-cECnCN-hgM4G-5V2DC1-hgM4j-BLGuG7-piDbJ-d77AbQ-gBETU-AYMeoQ-BP8H9i-BTZ2vS-BWhzee-BWhRpF-BnMddv-AYSNAF-BTZkjY-Bua6oj-AYM2nL-BTYZ4s-BTZw6C-AYLVvf-BLGBhS-BWhJcK-AYV7pJ-BP1r34-BTZiXE-BnMmFn-AZ1QJT-AYT7tK-AYV3xW-BLQqc9-BLGsbW-BTZkQC-BTZ17E is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

"Südsee, Braunschweig" by Reinhard Klar https://www.flickr.com/photos/32409232@N05/3261790102/in/photolist-5Yewyo-5Yewyj-zTp7wF-6bpXnQ-4V59tG-hmQhEW-4Wsunb-hA8JjE-DTLs3F-5yZ6At-4Woeh2-zgsyd4-hACG6H-hmQijE-hndBze-hmQj8y-hvCcUv-hkN6oM-hkNxah-7ho3Yf-D2fYpP-hxhHU1-4jyrjA-Ffnnpq-hvAqk8-AycRjL-4ctZ19-hA8KGE-hxohXz-nvWcri-8hinKR-Ac8G3x-G2Hko3-5YVwTn-hkNyjw-hzVGyZ-8E4z5t-zNKref-hkNy3h-hAa97z-jXJk3M-AejdFr-7ho3id-5gYmNK-t6DJ7r-6HAe2x-nH5rww-pwP2wN-2MsWd9-389jep is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Karlsruhe - Kamuna 2012“ by Klaus Nahr https://www.flickr.com/photos/klausnahr/7712079328/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

"2004-05-23 Augsburg 010" by Allie_Caulfield https://www.flickr.com/photos/wm_archiv/3667440561/in/photolist-6A5AiP-e21qCK-JrQySd-oQBrLB-48zuP3-JsnxnB-HD5cu9-HEUK3N-8CuoSP-7Mj9rR-JxMRAs-bdTBGR-6A9D3d-e21tS8-7Mo8Py-7q5oW3-bdTzXR-7Mj9MZ-Jy1Y2Y-9mC5ea-J5XmiW-HzrzuJ-cQe8iL-cQeabY-cQe6Lj-HEQ97H-cQegTN-6A6bKV-7Mjb9v-9mFm4S-cQeemE-87cwVQ-bdTD6R-9mrXcX-6PB3SY-cQecuo-dSu75o-bdTyhT-9RM464-J9uCbN-9RPYbq-9RM4s4-JsuBv7-9mDAmc-6Aa8Ch-MufFG3-Mu7H6F-HEVX8B-9RM4oB-9RM4dv">https://www.flickr.com/photos/wm_archiv/3667440561/in/photolist-6A5AiP-e21qCK-JrQySd-oQBrLB-48zuP3-JsnxnB-HD5cu9-HEUK3N-8CuoSP-7Mj9rR-JxMRAs-bdTBGR-6A9D3d-e21tS8-7Mo8Py-7q5oW3-bdTzXR-7Mj9MZ-Jy1Y2Y-9mC5ea-J5XmiW-HzrzuJ-cQe8iL-cQeabY-cQe6Lj-HEQ97H-cQegTN-6A6bKV-7Mjb9v-9mFm4S-cQeemE-87cwVQ-bdTD6R-9mrXcX-6PB3SY-cQecuo-dSu75o-bdTyhT-9RM464-J9uCbN-9RPYbq-9RM4s4-JsuBv7-9mDAmc-6Aa8Ch-MufFG3-Mu7H6F-HEVX8B-9RM4oB-9RM4dv is licensed under a Creative Commons license: 

„DSCF3726“ by timeyres https://www.flickr.com/photos/timeyres/9497508654/in/photolist-ftgdrd-ft1SNM-hVQ1sf-Bee3ZP-CDoMwx-C5TPJH-GB1wn4-GB2tz8-GyB3Gd-GyyGwh-FMdEiG-FMj6XN-FMvt1B-GGPMVP-Gyy2aw-FMc8iC-Cw6v5r-GB3EE2-CB62BL-CtQmk5-88Z8nb-CB66mj-dK8TXE-bWA2Lq-88VSBg-dK3rre-88VPuB-bWA6Mu-dK3rkP-r3R2KQ-x8ALsu-e4FiB8-r3QWZ7-dK8U3L-6otP3W-6crRgz-dK8TUu-88Zcz3-qNFBkH-88Z6Ej-6Q7j6o-88Z5Um-asWXyh-hXW46B-6Q3bcr-88VRTF-88VVEz-88Z4rd-88VWrn-9zat4Q/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Panorama Kleine Brücke Verden“ by Marc Schnau https://www.flickr.com/photos/marcschnau/14711923701/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„OHZ Windmill I“ by Till Westermayer https://www.flickr.com/photos/tillwe/269583167/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Oldenburg“ by Michael Mayer https://www.flickr.com/photos/michael_mayer/22775552305/in/photolist-AGAEdi-zKHeXD-4WCgaq-7UXDNx-mzAQR-3f2V6-3f3fY-7UXDNB-beZZGR-mzCoL-A9gEEc-BVwPfu-9ZkEYD-BXQAzR-Drwzut-aX4syH-aR69Lk-FD25dr-fMjGfb-vWJZqd-FCNU3b-aR5WiK-at4ru6-3f2rE-mykms-gW1QYT-bfu5xT-Fs2Uo-4JMCUV-4JFpDX-4JKEzq-4JFpFR-4JMCUe-4JFpAv-4JMCVT-4JFpHx-4JKEru-4JMCWX-85qXhb-GpDDQ-419Lk-bcxDV-Fs2Ud-Fs2Uj-Fs2Um-9UyHob-o6G9RU-nPist7-nPisP7-nPiHS2 is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Kreismuseum-Syke“ by Alfred Schierholz https://www.flickr.com/photos/100652816@N08/9717110206 is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Frühlingsabend am Schloßteich Chemnitz 2“ by Uwe Kaufmann https://www.flickr.com/photos/41569813@N03/5740329483/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Gipfelstürmertag - Krefeld von Oben - Liebfrauenkirche“ by Philipp Beckers https://www.flickr.com/photos/grimneko/17560080462/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„Luebeck“ by Marcus Meissner https://www.flickr.com/photos/marcusmeissner/3508054148/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Kassel“ by Ken Hawkins https://www.flickr.com/photos/khawkins04/7715899852 is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„Heidelberg Castle“ by Cristian Bortes https://www.flickr.com/photos/bortescristian/8796348751/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by/2.0/

„St. Andreas und St. Mang“ by Bjoern Schwarz https://www.flickr.com/photos/bagalute/29662731561/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/

„schlossberg“ by Martin Abegglen https://www.flickr.com/photos/twicepix/5736626101/ is licensed under a Creative Commons license: https://creativecommons.org/licenses/by-sa/2.0/