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

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Because there's no place like home.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

This English medieval castle is where King John died of dysentery.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

Perfume museum and library.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

A swath of France so devastated by war it is still forbidden to go there.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Spend the night in this formerly abandoned traditional Scottish village.