The tallest hotel in Europe.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's imposing monument to the Space Age.

Former headquarters of the KGB.

Back in the tiny USSR.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

In the middle of one of South America's most historic walled cities lies a bar with an enormous collection of Soviet memorabilia.

The first museum in the United States dedicated entirely to posters.

A little slice of Florida face-in-a-hole kitsch, unexpectedly located in a small New Mexico town.

An original apothecary from 1792.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

Exact replica of the ancient monument, but much, much lighter.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

Outsider art meets paleontology at this roadside reptile repository.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A legendary speakeasy bookstore returns from the brink.