This private residence was the template for one of the most beloved television homes of all time.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

An eclectic trailer park retreat in the middle of the California desert.

The final resting place of a space program monolith.

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

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

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

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

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

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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