Medicinal spa created with the discharge from a geothermal energy plant.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A swath of France so devastated by war it is still forbidden to go there.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

Once the most densely populated place in the world, this island is now a ghost town.

Austrian and Germans who died on British soil during World War I and II are buried here.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

This 19th century police station now puts the history of the Manchester City Police on display.

This unique, full-sized copy of the Bayeux Tapestry sports a few modern additions, including underwear.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A replica of the straw hut where Vladimir Lenin lived in hiding, disguised as a hay farmer, in 1917.

Pictures tacked onto trees remember the more than 40,000 of Stalin's victims buried here in mass graves.

Rare documents, old instruments, and gruesome specimens showcase the history of military medicine.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Ripped apart by a bomb in 1993, the shell of Pablo Escobar's infamous vacation house still stands.

This unofficial museum details the rise and fall of Colombia's most notorious narcotrafficker, Pablo Escobar.

A church of bones, decorated with 40,000 human skeletons.

A museum glorifying the life of Stalin, located in the city of his birth.

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