Places Morten Buus Wants to Go

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This foolish Victorian sea fort was converted to a deluxe hotel.

This colossal war machine is now a living museum dedicated to underwater warfare.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

In this medieval fish bowl, the carp weren't pets.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

In this nearly 1,000-year-old monastery, monks painstakingly restore old books.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

Believed to hold the remains of Japan's most infamous fox spirit, this stone is said to kill those who dare approach.

In Spain, the ruins of a Roman military camp sit along a flooded section of a river.

Archaeologists are still unraveling the secrets of the brutal massacre that wiped out this ancient fort.

This reconstructed ancient fort was home to one of the few horse training rings in the Roman Empire.

The ruins of a Roman fort lie in the shadows of an imposing medieval castle.

In an arboretum with hundreds of memorials to the fallen, this one might be the most poignant.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

The site of one of the largest non-nuclear explosions in history, created when a massive bomb dump accidentally exploded.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

The lesser-known lost colony of Roanoke was a safe haven for formerly enslaved people during the Civil War.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.