A quirky collection of figurines backdropped by city views is hidden next to a popular restaurant in the Hollywood hills.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

An offbeat angle on the ocean viewed through an antiquated lens.

The sun acts as a key that only fits this giant keyhole twice a year.

340 bicycles, 65 feet high.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

Gnomes have their very own bonsai-landscaped settlement on a university campus.

A second generation sun-powered marvel lights up the night.

This quiet neighborhood is also home to a 700-ton rock transported by the last Ice Age.

A 36-ton remnant of the last Ice Age now resides amid picturesque vineyards.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

In order to save this beloved rock, locals blew it up and put it back together piece by piece.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

The sophisticated hydraulic system of the Nazca civilization.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

A serene temple with stunning stained glass hides in downtown Dallas.

For nearly 50 years this airplane that crashed during World War II remained missing in the remote Australian backcountry.

George Martin's Caribbean recording studio now rots within the shadow of an active volcano.

A beloved tribute to the Fab Four and the freedoms they inspired.