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

The final resting place of a space program monolith, soon to be unveiled again to the public.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Abandoned bridge hidden deep in the San Gabriel Mountains.

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

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

This 'Murder House' grand mansion has starred in everything from Bones to Buffy.

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

This glamorous old building is said to have inspired the Tower of Terror.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Canyon walls shrouded in ferns.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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).

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

San Francisco's newly reopened hands-on science museum.

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

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

The private clubhouse for the members of the Academy of Magical Arts.

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

A hotel and restaurant serving as the mecca of kitsch.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.