This historic streetcar system has been running since the 19th-century.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

One of the world’s longest pedestrian suspension bridges.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

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

This star-shaped military outpost is now simply trying to protect itself from neglect.

Perhaps the most spectacular grotto along the Algarve coastline.

A submerged village appears when dam levels drop.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

An unusual round church in London with a Templar past.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The remnants of a facade from a 19th-century market stall emporium.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

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

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Spend the night in this formerly abandoned traditional Scottish village.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A 30-acre garden inspired by the principles of modern physics.

These fantastically named natural pools look like something out of a Scottish myth.