Op-art architecture designed for happiness.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Peek through a transparent pyramid and drink in the mountain made of books.

Two women with a flair for both adventure and artful clutter created this singular round home.

A wunderkammer of mysterious objects and stories.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A surreal museum of extraordinary industrial objects.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

Bohemian paradise covered in majestic forests.

Before building her own tombstone, an untrained artist created a concrete menagerie in her garden.

Europe's second largest ossuary wasn't discovered until 2001.

Mysterious painted skulls in Moravia.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

A house filled to the brim with oddities and curiosities.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

An eerily charming collection of salvaged buildings and curios grown out of a family scrap business.

Free candle-lit art gallery, accompanied by a live piano score.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."