An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

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

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

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

Possibly the oldest of Britain's ancient henges is also one of its most stark.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

A scattered trail of street art adds a pop of color to the city's stark structures.

Five varieties of trees with custom-designed grates around the trunk are planted along the route of the Seattle Transit Tunnel.

A colorful statue honoring the local salmon in glass and bronze.

The spur that wouldn’t die.

A "Minnesota-style" pizza parlor in the Scandinavian heart of Seattle.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

See massive fossils that are over 200 million years old in northeastern Arizona.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.