A collection of old neon signs from all over Poland line a secluded courtyard.

Deep in a Polish forest, this collection of Iron Age megaliths still holds onto many of its ancient secrets.

A haunting deserted hotel is a favorite with artists and photographers.

A striking public sculpture representing the period of martial law in Communist Poland.

These massive moving sand dunes have swallowed an entire village and are still on the run.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

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

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

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

The site of the first battle of World War II.

A hidden art gallery in an abandoned Warsaw fort.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

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

Warsaw's fantastically preserved gasworks...almost.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

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

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

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.