The capitol city's oldest existing cemetery.

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

Four hundred granite steps were built into this massive rock by the National Park Service.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

The California capital city once stood 10 feet lower than it does today.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The rusting remains of the largest assembled WWII fleet on the West Coast.

The former Naval shipyard is open for exploring - mostly.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

Where a staggering 747 ships were constructed during World War II.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

Internationally-recognized arts center housed in a century-old former military barracks.

Standing in for the first ship to navigate the Northwest Passage.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

A modest reminder of treacherous waters at the Golden Gate.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

The remains of a ruined mansion memorialize the 1906 earthquake.

A monumental cross hides in the trees in Golden Gate Park.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.