Television tower and bridge statue against blue sky, Berlin, Germany

Freewater aqueduct against blue sky, Lisbon, Portugal

Building under construction

Low angle view of cathedral against blue sky, Berlin, Germany

Low angle view of crane against blue sky, Bremerhaven, Germany

Old ruins of building under clear blue sky, Dodecanese Islands, Greece

Old ruins of ancient roman temple against blue sky, Acropolis, Athens, Greece

Low angle view of statue against blue sky, Dusseldorf, North Rhine-Westphalia, Germany

Cargo ship in river under suspension bridge, Belem, Lisbon, Portugal

Tourist boats and gondolas under the Rialto Bridge on the Canale Grande, Venice, Italy

Modern temple Wat Rong Khun, Chiang Rai, Thailand

Metallic architecture under the sky

Bridge under construction against blue sky