Political debates in a fabulous Pasadena castle.

This magnificent mausoleum is as much a work of art as it is a historic resting place.

The world's first disc golf course has the Jet Propulsion Laboratory as a neighbor.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

This tucked-away cemetery is the final resting place of a prospector who uncovered one of the largest gold mines in Arizona.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This monster board rode a monster wave to break two world records.

The site of murders and Satanic cult gatherings.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

This enormous World War II relic is one of the largest wooden structures in the world.

Two small markers remember the Alamo's feline protectors.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Once a year, at exactly 11:11 a.m., this monument comes to life.

An urban laboratory.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

A replica of the flagpole that gave a frontier town its name.

The cinder cone volcano with a less than complimentary name.

A mysterious spirit totem at the edge of Navajo lands.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

At this local mall, visitors are ushered through a 1940s jail exhibit.