This whimsical fountain pays tribute to Toronto's four-legged friends.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

Collection of fossils, plants, and ancient animals encased in amber.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Frida Kahlo's childhood home, now a museum of her life and works.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

Twelve natural mummies are displayed in the crypt of this former monastery school.

66,000 pieces of art, donated by one of the world's richest men.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Mysterious stone tower featured in many alternative histories of the New World.

Avoid gangster interaction while window-shopping.

A popular European tradition makes its way to the states on one of America's most famous bridges.

A bygone village occupation lives on via this quaint public chalkboard.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Microscopic scenes; some call it novelty, some call it art.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

Countless grotesque faces stare out from this eerie Prague art wall.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.