The most loyal of little dogs, or a Victorian era publicity stunt?

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Try not to get slimed in Tribeca.

Depending on how it is measured, this lighthouse can claim to be the tallest in Europe and the tallest conventional lighthouse in the world.

Massive galleon from a box-office bomb docked in Genoa.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

This ancient market is often referred to as the oldest shopping mall in the world.

Five candy-colored villages on the Italian Riviera.

Pompeii's less famous neighbor is still revealing her secrets.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A submerged archeological park still holds the wonders of a Roman Sodom.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

The angel of death appears to weep black tears at this grave marker.

This steamer is known as "The ship that built Cleveland."