The largest drain hole in the world.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

Of all the origin stories for weed's secret code, this one likely has the goods.

An overlooked and unassuming engineering marvel.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A man-made island in scenic San Francisco Bay.

Deco Modern sculptures of the people of the Pacific, cast for the 1939 Golden Gate International Exposition.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

The Laureates here get something even more coveted than a Nobel Prize: free parking for life.

A celebration of once forgotten materials.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The huge granite obelisk that towers over a small California town.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

A remote crossroads honoring a fallen talent.

Hidden in the back of a disused small town hotel is a dive bar shellacked with over a million pennies.

Thousands of turbines whir at the origin of North American wind power.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Hundreds of trees made from glass bottles make up this forest on Route 66.

A ring of creosote bushes that are estimated to be 11,700 years old.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

A former utopian healing center created by a huckster and built by derelicts.