A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Walk through Czech history in Prague's largest graveyard.

Macabre astrological automaton clock dating to the late 1400s.

An enormous and lavish Gothic church in Czechia.

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

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

This unique building in the main square stands out among the city's typically Baroque architecture.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

This subterranean necropolis holds three floors of antler-dug grave caves.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

The medieval home is still engraved with the symbol of the profession, an eye flanked by two axes.

Dynastic Home of the De Piro Family.

This 16th-century cemetery became a recreational park during the Soviet occupation—today it's a little bit of both.

A decaying, yet still functioning, work of communist architecture.

An impressive ensemble of sculptures that survived the Soviet regime.

This statue is dedicated to the animal cosmonauts that perished during space flight experiments.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This was the second largest mercury mine in the world and one of the oldest preserved mine complexes in Europe.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.