The mysterious round rocks of Schooner Gulch.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This giant temperature attraction created some giant electric bills.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An alley covered with 20 years of bubble gum.

More than 700 species live within this murky marvel of a swamp on California's coast.

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

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

The most beautiful Taco Bell in the world even has surfboard parking.

A trash dump made beautiful by nature's power.

Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast is a natural hole that seems to be draining the sea.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

Tirelessly maintained by a Wisconsin man named JFK.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

An amazing collection of sculptures and art.

Home of a French nobleman's short-lived attempt at raising cattle in the Badlands of North Dakota.

The world's largest Holstein cow.