832-402990 - Circular staircase with black metal railing, inside the triumphal arch, Paris, France. Abstract background, a look downstairs an infinite swirl stairway
832-389239 - Observation tower at the tree top path Salzkammergut at Gruenberg with Lake Traun and Traunstein, Gmunden, Salzkammergut, Upper Austria, Austria, Europe
1269-560 - Bernina Express passes under the helical (spiral) viaduct of Brusio, UNESCO World Heritage Site, Valposchiavo, Canton of Graubunden, Switzerland, Europe
1269-559 - Bernina Express passes under the helical (spiral) viaduct of Brusio, UNESCO World Heritage Site, Valposchiavo, Canton of Graubunden, Switzerland, Europe
1269-558 - Bernina Express passes over the helical (spiral) viaduct of Brusio, UNESCO World Heritage Site, Valposchiavo, Canton of Graubunden, Switzerland, Europe
1269-557 - Bernina Express passes over the helical (spiral) viaduct of Brusio, UNESCO World Heritage Site, Valposchiavo, Canton of Graubunden, Switzerland, Europe
724-2517 - Infinity Tower features 495 apartments in a helical shape that swivels 90 degrees from the base to the top, Marina district, Dubai, United Arab Emirates, Middle East
832-136868 - Stone mosaic made up of different coloured stones, Bauma 2010, international trade fair for construction machinery, Munich, Bavaria, Germany, Europe
832-109996 - Evening mood, spiral-shaped tower of Fanar, Qatar Islamic Cultural Center, Doha, Qatar, Arabian Peninsula, Persian Gulf, Middle East, Asia
832-98682 - Aerial view, Constantin 6, 7, Schachtzeichen RUHR.2010 art installation, Bochum, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe