This Stockholm light tower can be controlled by anyone with a smartphone.

One of the world's heaviest musical instruments towers within a popular urban park.

It's good luck to be mocked by this monkey.

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

A strange rock formation with numerous legends trying to explain it.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

"The most colorful grottoes of the world.

The fairy tale castle of the "fairy-tale king."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This former Nazi labor camp is now a poignant memorial, complete with giant Soviet-style monuments.

Two old windmills got a new life as oversized sculptures of a man and a woman.

A wooden statue of an Estonian pagan god and King of the Setos stands atop a sacred hill.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

Mysterious craters may have been home to an ancient cult.

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

Extraordinary animals sculpted from leftover junk.