This crumbling Portuguese ruin overlooks the populace it once ruled.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The celebrated eyesore created by starry-eyed sweethearts.

The final resting place of the "father of special effects."

The tomb of history's greatest potato promoter is surrounded by tubers.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This bridge was constructed from the rubble of the infamous Bastille.

France's most famous cemetery, with some of its most curious tombs.

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

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This singular art museum in São Paulo is unique inside and out.

A 125-meter long "tribute to the Brazilian people."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

Beautiful public park off the beaten path and away from tourists.

Solitary monument dedicated to the beauty of nature.

This attraction is devoted to the wonders of steam power and features a replica of one of its most public disasters.