The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

On the small Thai island of Ko Mak, there is a forgotten garden of erotic statuary.

The atomic museum in the basement of this German castle displays long strands of replica uranium cubes.

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

This abandoned airplane hanger is said to have once been a top secret launch facility.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.

Whiskey lovers, this is your happy place.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This basement museum explores the art and artistry of fascism.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

The experimental test tracks of a retro-futuristic monorail still stand in the French countryside.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

This whimsical stacked cabin looks like something out of a children's book.

If you want to get married in the White Marble City of Ashgabat, you should do it in this surreal disco ball building.