This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.

The Devil’s own choice when he needs a drink in Brussels.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

A remote island holds what claims to be Scotland's smallest cinema.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

The highest lighthouse in Scotland shines from an abandoned island.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

Scotland still bears an enormous scar of its Roman past.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.

Now home to a drinking establishment, this building has a macabre history.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

The abandoned transportation hub hides within the Glasgow attraction it once served.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Many famous English poets including Elizabeth Barrett Browning are laid to rest at this Swiss-owned cemetery in Florence.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.