Guests become prisoners on a visit to Latvian prison.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

Burlesque Hospital Themed Restaurant.

Spend the night in 1920s Latvia in this historic recreation and movie set.

Flamboyant architecture from the turn of 20th century.

Replica of mosque destroyed by Russia in the 16th century.

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

This abandoned secret city is a crumbling wonderland of Soviet ruins.

This nostalgic Russian museum is full of USSR cultural artifacts from the 1970s and 80s.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Resonant stone, that has been played since prehistoric times.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A quirky house created entirely out of glass bottles combines a collector's spirit with an artist's flair.

Mysterious hillside with a continuously burning natural fire.

In oil-rich Azerbaijan, people bathe in the black stuff.

A shrine of fire worship built on top of a natural flame.

"Holy Wisdom" overlooks the city that became its namesake.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.