A unique seaside cave where Aleister Crowley faked his own death.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

The forgotten remnants of a land-to-sea cable car that was once unique in the world.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

A Korean village where times stands still.

This former coal mine has been turned into a sprawling modern art complex.

One man and his wife have turned a barren Korean island into a fantastical botanical wonderland.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

Secret North Korean passage discovered below the world's most dangerous border.

Plenty of old carney magic still haunts this photogenic amusement park.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

No one knows who built this strange cave of worship or exactly why.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

A muddy alien landscape that is home to rare species of exotic plants.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

An abandoned brutalist monument whose history has been lost to the ages.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

A forgotten monument to Yugoslavian freedom.