Paths are maintained, but trees have taken over plots.

The land is home to swimming ponies and a legendary 18th-century treasure.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

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

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

This massive redwood tree has a hole in the base big enough to drive through.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

World-famous, Pink's still manages to keep its prized cult fetish status.

Canyon walls shrouded in ferns.

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

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The last of its kind in the country.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

A beautiful geyser under environmental threat.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Shakespeare has been brought to life in this open air theater for the better part of a century.

A Roman-style column in Oregon hides a spiral staircase inside.