Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

An ancient stone fortress considered by many to be the eighth wonder of the world.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

The world's largest drain sits below the city of Kasukabe, Japan.

Colorful and chaotic stacked hotel in North Holland.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

An experimental, automotive replica of Stonehenge.

The most alien-looking place on Earth.

An urban laboratory.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Abandoned medieval hill town.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.