The original Uncle Sam was actually a New York meatpacker who is buried under this historic grave.

Two mermen, eternally spitting into each other's mouths.

100 massive sculptures in the Hudson River Valley.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

A beautifully eclectic mix of architectural styles.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

The corpse bride of Portugal.

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

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Elaborate tile work in this railway station tells the story of Portugal.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

What was once a bustling mining installation is now a bustling hub of contemporary art.

Most prolific publishing house in the 1600s open to the public.

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Climb inside an iron crystal magnified 165 billion times its normal size.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."