A memorial to the atrocities of the People's Socialist Republic of Albania.

A museum dedicated to secret surveillance.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Eighty million natural history specimens call this gargantuan museum home.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

Hear the tales of New York's most notorious criminals.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

The final resting place of the "father of special effects."

A museum which takes visitors to the côté obscure of Paris.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A crumbling hospital from the 1850s on Roosevelt Island.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Try not to get slimed in Tribeca.