This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

A once-secret library of Freemason history in Catalonia.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

This famous archeological mystery may be an ancient example of movable type.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

This 11th-century Greek monastery has renowned mosaics and relics of a brutal past.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

Temple complex that once housed the famous statue of Nike.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

Giant marble phalluses on the sacred island of antiquity.

The rocky remains of an ancient Greek forest.

An intricate network of underground tombs carved into volcanic rock.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

This smily stone feline is meant to represent a mythical lion that almost destroyed the island of Kea.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.