Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

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

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

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

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

Pilgrimage site for star-crossed lovers.

This candy-colored storybook village originated as a 19th-century Methodist campground.

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

The filming location of a shark attack in Steven Spielberg’s famous shark movie.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

Five mythical trolls have taken up residence in woods and hidden on paths at the Coastal Maine Botanical Gardens.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Abandoned Italianate architecture on the coast of Maine.

The most photographed house in Maine looks good enough to eat.

An unrecognized nation-state created in the 1820s to avoid taxes.

A mere dot on the map in the great north woods is the first place in America to vote in Presidential elections.

Memorial dedicated to four citizens killed during a shooting spree prompted by a routine traffic stop.

The entire length of the border is marked by a 20-foot-wide slash through the trees.