This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

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

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

The wilderness of northern Sweden is full of shelters to protect people from sounding rockets returning from space.

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

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Only a fragment of this 15th-century Dance of Death survives today.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

"There's nothing there," and other lies the KGB told us.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Sound travels strangely in this underground whispering gallery.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

From under the bed of one of the co-founders, this server helped launch the notorious file-sharing website.

This declassified Cold War bunker hosts a large collection of Swedish aircraft.

This wonky bit of historical taxidermy is experiencing a second life online.

Get past the gatekeeper's apartment and enter an elaborate hoax of a restaurant with a Masonic feel.

340-foot statue built to honour the Heroes of the Soviet Union.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

The ruins of an abandoned church loom within a picturesque Ukranian village.

A quirky collection flush with information on commode culture from ancient times to modern day.

A Kyiv-based repository for all manners of discarded curiosities.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

The largest catacomb system in the world.