The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Modern art commemorates one of the first military actions of World War II.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Museum dedicated to "the man who moved the Earth."

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This man-made mound monument was built out of soil from all across the Polish empire.

A 20th-century picture show in 3-D.

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

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

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

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

This unique Renaissance castle was turned into a home for Nazi occultism.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Ruins of a German Castle on top of a towering stone pillar.

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

Two monstrous faces loom over a village in Czechia.

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