Try not to get slimed in Tribeca.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Go surfing on this urban wave, "hacked" by local surfers.

The fairy tale castle of the "fairy-tale king."

Pilgrimage site for star-crossed lovers.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.