The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The highest bridge in America was built for an almost unnervingly small amount of money.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A bizarre roadside attraction and the first instance of miniature golf in the world.

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

Quite simply the largest tree in the world (by volume).

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

The magic's in the hole!

The largest earthwork effigy in the world.

Rare recess caves fill this unbelievably beautiful Ohio park.

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The world's longest known cave system.

A beautiful geyser under environmental threat.

A trash dump made beautiful by nature's power.

The first declared National Monument in the United States.