Arco da Vila (Town Gate) classical gateway fronting the city's old medieval gate, Faro, Algarve, Portugal

Royal Gallery of Saint Hubert, Brussels, Belgium, Europe

Passage Choiseul, Paris, France

Alcaiceria, market, Granada, Andalusia, Spain

Macca-Vilacrosse passage, a fork-shaped, covered pedestrian arcade street in Bucharest, Romania, Europe

Macca-Vilacrosse passage, a fork-shaped, covered pedestrian arcade street in Bucharest, Romania, Europe

Mosaic and glass roof in the Galleria Vittorio Emanuele II, Milan, Lombardy, Italy

Tourists in a souk in the old part of town, Mrrakech, Morocco

Vaulted ceiling in the clothing bazaar, souk, in the historic center of Tripolis, Tripoli, Libya

View from a plane, Alps, Lake Garda, Italy, Europe

back view traveller walking down bridge

Egyptian Bazaar, Misir Carsisi, Spice Bazaar in the Eminoenue district, Istanbul, Turkey

Back view traveller climbing stairs

Arcades, Herzog-Friedrich-Strasse, Innsbruck, Tyrol, Austria, Europe

Detail of the side of the front part of the Stazione di Termini, or Stazione Centrale, generally known as Stazione Termini, the main railway station in Rome, Latium, Italy, Europe

Gateway, Lesser Town Bridge Tower, Prague, Central Bohemia, Czech Republic, Eastern Europe

Walkway of a pedestrian bridge, Park Gueell, park by Antoni Gaudi, Barcelona, Catalonia, Spain, Europe

Schlossstrasse street, Alter Markt square, view through the Georgsturm bell tower, Arnsberg, North Rhine-Westphalia, Germany, Europe

Freyung Passage shopping arcade, Vienna, Austria, Europe

Entrance area airport Barcelona, Catalonia, Spain

Moonlit pedestrian passage on Mt Saentis, Alpstein range, Appenzell region, Swiss Alps, Switzerland, Europe, PublicGround

Wooden bridge used as a roofed passage to the Parish Church of St. Lawrence, Thurnau, Franconian Switzerland, Franconia, Bavaria, Germany, Europe