The burial grounds of a secret society includes fences topped with fake Tesla balls.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

The first U.S. town to secede from the Union, only to vote themselves right back in.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

The oldest continuously operating Catholic school west of the Mississippi.

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

A watering hole where the options for seating include a bar, patio, or subterranean cave.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

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

A unique museum where guests can rent and operate a locomotive.

Spain's largest bullring offers a unique glimpse at architecture and history.

A fine mixture of the old and the new topped with an art deco neon spire.

A grave dedicated to the pioneers who settled California.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

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

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

A picturesque example of brute-force engineering conquering nature.

These egg-shaped buildings constructed by Jesuits house a quaint museum in the Andes.

A showcase of engineering might that was also symbolic of westward expansion.

A cemetery dedicated to the mountaineers who perished climbing Mount Aconcagua.

California's first suspension bridge.

Constructed on the ruins of a convent, this tower saved countless lives.