California's oldest existing theater building hosted an impressive cast of celebrities, including hosting Mark Twain's first lecture.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

The tallest bridge in California was constructed for a project that was eventually cancelled.

This 19th century hydroelectric powerhouse was the first of its kind.

A working miniature city designed to teach kids about safety and presumably city planning.

The last of a gourmet supermarket chain, this store helped spark California's Food Revolution.

I Street Bridge is the heaviest swinging center bridge in the United States.

A replica of the first public theater built in California.

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

Art Deco stylings conceal the true nature of this bridge.

The capitol city's oldest existing cemetery.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

Puzzling...this tree looks like an assemblage of dismembered monkey limbs.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

This structure was moved nearly 40 feet while people continued working inside it.

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

Its sunny hues are believed to have inspired the town's color palette.

This beautifully deceptive waterfall is something far different from what it appears to be.

The stoutest tree in the world.

In a town defined by its incredible trees, having a shrine in one just makes sense.

The former textile factory is now an oasis for the arts.