Roadside collection of 65,000 signs.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

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.

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

This municipal playground was co-created by the father of one of the most playful characters ever.

This Cold War–era underground city includes offices for Mao Zedong and Lin Biao.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A concrete block embedded with thousands of pulled teeth was created by a local dentist to memorialize his dog.

The world's longest known cave system.

A historic coal mine that doubles as a museum and tourist attraction.

The land is home to swimming ponies and a legendary 18th-century treasure.

This small museum dedicated to the painful memory of segregation is essentially a time capsule.

The only working large-scale tea plantation in the United States.

Most historians agree that the so-called "Gentleman Pirate" wasn't much of either of those things.

One of the oldest living oak trees in the Southeast.

A unique museum dedicated to the Gullah-Geechee people, housed within an old oyster cannery.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.