This crumbling industrial fortress has attracted daredevils, filmmakers, and historians.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

The real-life site of Ichabod Crane's infamous gourd attack.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A remarkable feat of Victorian engineering across the Firth of Forth.

Described by William Wordsworth as a "World of Wonder."

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The library of every book lover's dreams.

This exuberantly curated landscape is one of the largest sculpture gardens in Canada.

Once America's longest-manned military fort, now an abandoned hulk.

America's first public mental health facility.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

This museum explores the grim reality of life in the earliest British colonies in America.

One of the first intercontinental ballistic missile sites in the United States.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Copenhagen's celebrated theme park and gardens.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Old Danish castle immortalized in Shakespeare's Hamlet.