A hidden three-foot-wide house separates these two regal churches.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

The only ski tunnel in North America provides easy access to amazing snow and beautiful views.

This geothermal hot spring hides beneath a slowly growing mineral dome.

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

A painfully obvious spy house sits right across the street from the Russian Embassy.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

Monument to a suicide protesting the Soviet invasion.

Legends surround an ancient tree trunk riddled with nails for good luck.

The beautiful baroque library of the Hapsburg empire.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A collection of Lenin busts and other Soviet Era statues sit idly behind the Semipalatinsk Hotel.