Places Oops3ggs Wants to Go

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

The majority of the highest mountain in Poland is actually located in a different country.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.

The largest toy museum in Poland showcases Europe's history of childhood.

This picturesque castle in Poland has a rich history, including a legend that ties it to lost Incan treasures.

This imposing 20th-century castle was abandoned before it was ever completed.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

Naturally formed rock city in Poland.

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

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

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

The site of the first battle of World War II.

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

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

This was the second largest mercury mine in the world and one of the oldest preserved mine complexes in Europe.

Apparently, Hell has waterfalls in Slovenia.

The "dragon babies" of southeastern Europe.

An otherworldly alpine pasture in Slovenia with historical ties to WWII and architecture that recalls Middle Earth.

A miniature train-ride through Slovenia's largest cave system.

This massive subterranean fissure is known as the "underground Grand Canyon."

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

A fantastical display of Croatian folklore, mythology, and myths.