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

Explore a remarkable 35-hectare sculpture garden located an hour outside of Lisbon.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

This giant sculpture made of trash is a critique of society's wastefulness.

One of the largest Roman settlements in Portugal.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

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

A hidden three-foot-wide house separates these two regal churches.

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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

This small chapel is built of human bones and decorated with a golden skeleton.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.

The world's largest collection of the world's largest objects is in one small Illinois town.

The only diamond mine in the world where you can keep what you find.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.