Places pleiades Wants to Go

A hidden art gallery in an abandoned Warsaw fort.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

The site of the first battle of World War II.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

An underground city of salt.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

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

"World machine" built by an untrained Austrian farmer.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Double spiral staircases are not unheard of, but they are very rare.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

The ruined doorway is a portal to the building's turbulent and torturous past.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Apparently, Hell has waterfalls in Slovenia.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.