This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Spain's largest bullring offers a unique glimpse at architecture and history.

A 16th-century Andalusian palace.

The final resting place of the great navigator, or maybe his brother.

A gorgeous example of 13th-century Gothic architecture.

These elaborate gothic monuments honor Verona's medieval lords.

Pilgrimage site for star-crossed lovers.

Third time's a charm, or in this case, two testicles are.

Da Vinci's equestrian statue, 500 years in the making.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Where Saint-Martin ends and Sint Maarten begins (or vice versa).

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

The world's smallest drawbridge.

Take a step into the workshop where Edison and his employees revolutionized the world.

World Trade Center memorial likened to a woman's sexual organ.

An allegedly cursed tree represents a town's reckoning with a racist past.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

In the 19th century, this canal provided power to mills, machine shops, and other businesses in the area.

This 25-foot-tall gorilla made his way from the Wildwood boardwalk to a Pine Barrens gas station and deli.