Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

The largest self-built castle in the U.S., six decades in the making.

A modern English garden of eccentric beasts, follies, and oddities.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

Walking by this fence is like strolling along a portal to various fictional worlds.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

One of England's most famous churches hides a pair of little known architectural treasures.

The house where Good Will Hunting was written is a surreal fairytale abode.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A giant 400-acre preserve in North Florida for displaced wolves.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The largest Star Wars collection in the world is its own galaxy of collectibles.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

The ancestral home of beloved English poet Lord Byron has a bizarre history.

An enigmatic natural rock formation with a manmade passage cut through the center.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The sunken structure looks like the victim of a catastrophic flood.

This small, but long-running hobby club has built one of the largest model rail lines in the US.