A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The mummified relic of St. Antoninus.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

This grubby wall is said to be one of the Earth's esoteric energy centers.

Gargoyle head that brings good luck.

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

One of the tallest maypoles remaining in England in one of its smaller villages.

17th century puritan church with connections to the Salem Witch Trials.

This aging storage facility is the world's largest brick warehouse.

19th century tunnels burrowed under Liverpool.

An important landmark in the history of algebraic logic.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

A stone wall that mysteriously moved three feet from its foundation.

A museum in the childhood house of a medical pioneer.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Striking occult iconography on a medieval German church.

A secret meeting in this small cottage changed the course of British history.

A memorial to American oil drillers who volunteered to travel secretly to England in 1943 and work in the U.K.'s only oil field.

As part of a larger public art project, three pillars honor the past of Wincobank.

When methane gas started seeping up from the ground, they picked up and moved the entire town.