A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

This abandoned boat was left in place thanks to its rotting beauty.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

A classic advertising icon immortalized in regal bronze.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

A large instrument played by the wind.

A modest reminder of treacherous waters at the Golden Gate.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The largest of Denmark's seven mysterious round churches stands on an island in the Baltic Sea.

An artist's vision for connectivity spans seven continents and 16 countries.

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.

One of the ghostly stops along Route 66.

While exploring the desert, you can stop by the home of a fictional heretic from a parallel universe.

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

The remnants of a failed socialist commune can still be found just off a California highway.

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

You don't have to be a diplomat to visit the so-called Camp David of the West.

A hardware store Buddha statue installed to deter vandalism wound up attracting Vietnamese immigrants who came to pray.

The newsstand that never closes its doors—well, almost never.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.