Go inside to really appreciate this 500-year-old technological masterpiece.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This is the oldest Roman-made bridge in the city still existing in its original state.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Op-art architecture designed for happiness.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

27-room home built with the fortune of a sugar magnate.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Only hotel where you can legally launder money.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

The famous author's cottage hideaway.

Created by four famous men, the beautifully designed Buffalo State Asylum was resurrected as a hotel and art center, but still boasts a ghost story or two.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

One of the last remaining movie theatres in the country that features a rear-projection system.