A spherical "micro-nation" in the heart of Vienna.

This former insane asylum now holds a pathological anatomy museum.

Mexico's astounding mummy museum with "the world's smallest mummy."

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

A shrine to a skeleton saint in the city of angels.

A church of bones, decorated with 40,000 human skeletons.

The attic of a four-century-old canal house hides a clandestine church.

A collection of biblical memorabilia.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

"Looks so real, it's scary!"

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A fascinating insight into daily life in the Eastern Bloc.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Saintly bones pressed into a wax effigy of a Catholic superstar.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

The history of radiation is on safe display at the foot of a radiation science laboratory.