The world's greatest Renaissance church.
Ancient rock fortress with frescoes.
St Petersburg’s onion-domed church, lined inside with 7,000 m² of mosaic.
Gaudi’s dragon-backed house on Passeig de Gracia — bone-like balconies, a scaled roof and not a straight line inside.
Gaudi’s hillside park of mosaic dragons, twisted stone colonnades and a serpentine bench overlooking Barcelona.
White basilica on the highest hill in Paris, with the artists’ square of Place du Tertre and the whole city spread out below.
A 1.3-km stretch of the Berlin Wall painted by artists in 1990 — including the famous Brezhnev–Honecker kiss.
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