Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

The largest collection of historical roller skates in the world.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

An abandoned boat that's been stranded mysteriously for decades.

This cabin from the 1850s is one of the first structures built by Chinese immigrants in California.

Haunting and beautiful trees, doomed to die.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

Steinbeck's old stomping grounds, immortalized in Cannery Row.

This eagle-topped spire remembers the military commander who snatched up California for the United States.

The oldest continuously operating church in California.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

The stately birthplace of California's statehood.

This remarkably simple jail went over a century without an escape.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

A tree grown from astronaut seeds which were exposed to cosmic rays.

The first safe in this California town had to hold all the gold.

Once the home of a hermetic monk, this cave now houses a small church.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

An old Danish political institution where members of government can grab a drink off the record.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.