This blowhole is supposedly caused by a trapped monster.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A sarcastic monument threatens to curse any "idiot" who dares remove it.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

The sculpture's largest spire points directly toward the North Star.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

A majestic hotel that also stands as a historic relic.

These formal gardens were designed to be admired from the vantage point of the castle.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

A quartet of brightly colored mythical beasts stand sentry at this gateway.

360° views of the city plus five floors of optical illusions and hands-on science.

A British plaque explains that a house was built using the spoils of the first international golf bet.

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

This old ruin once served as a post office, a train station, a restaurant, and a bridge to the Atomic Age.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

These grassy undulations on a stretch of University of Michigan campus aren't bad landscaping, they're art.

These gardens recreate unique and endangered Michigan habitats.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.