Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

This lake-bound geographical marker sits at the point where three European countries intersect.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

A memorial to the murdered Jews of Kaunas.

Sculpture garden of religious statues made it through Soviet rule.

Lithuania's outdoor sculpture trail of wooden folk art.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Staves, storm-calling, and of course, necropants.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

The oldest stone house in Paris was built by its most famous alchemist.

Abandoned railway line circling the city of Paris.

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

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

The patron saint of spinsters grasps a container of dried blood.

This historic stone bridge has an entire neighborhood clinging to its sides.