The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Ride a dragon train into a world of dwarves.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

Narrow-gauge railway with its own personal power grid.

Each year melting snow turns these Austrian hiking trails into scuba zones.

This former quarry is now a picturesque gorge that hides a sunken lake.

This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

Naturally formed rock city in Poland.

These crumbling Latvian forts make for some haunting seaside ruins.

Sculpture garden of religious statues made it through Soviet rule.

Ever-growing collection of devils in art.

A memorial to the murdered Jews of Kaunas.

A wooden replica of France's famous tower.

Wars fought and wars won are remembered by these abandoned bunker ruins.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

A former imperial sea-fortress and Soviet prison.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

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