This decommissioned nuclear power plant offers tours of its Communist-era control room and reactor hall.

A unique, free-floating electric ferry may be the only of its kind in Europe.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A museum dedicated to a Cold War era sausage.

The most visited, and possibly most controversial, museum in Germany.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Art and a pun, all in one.

This monumental work of art symbolizes the coming together of a previously divided city.

An eerie, derelict amusement park in Berlin.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.

A forest park outside Tallinn full of architectural and artistic curiosities.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

The gutted remains of this Estonian mansion are a monument to a tragic love.

Mysterious craters may have been home to an ancient cult.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.