An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

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

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

Mummified monks and the accidentally interred, in a 17th-century crypt.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

Two monstrous faces loom over a village in Czechia.

Europe's second largest ossuary wasn't discovered until 2001.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

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

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Walk through Czech history in Prague's largest graveyard.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.