Seventeen oak trees sprout from the roof and walls of this tiny chapel without any visual evidence of roots.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

On Japan's Tashirojima Island, cats are king.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Architectural monsters are devouring this palace's every door and window.

A fairy tale castle in modern Rome.

Architectureal fantasy quarter of Rome.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Romans built the world's tallest artificial waterfall in 271 BC.

A 16th-century horror show built in a lovely Italian garden.

This 16th-century monastery has been turned into a surrealist architecture compound.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

Stumbling upon this whimsical wooded garden is like stepping into an enchanted forest full of philosophical musings.

Fountain where visitors can earn a license to be mad.

Renaissance villa and gardens complete with a tormented colossus.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

Artist Diego Morlin's war between the natural and human worlds is a wanderer's delight.

This Italian foot path winds through the mountains via 52 individual tunnels.

This half-finished "city of toys" was almost Italy's own Las Vegas.

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.