This memorial pyramid marker honors one of the United States Government's first official camel riders.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

The ghostly remains of an accidental sea.

World's largest collection devoted to one fruit.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

The oldest structure in a beachside California city was built to serve eight students.

These unusual houses look like giant boats that washed ashore on a residential street.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This historic tower in the California desert promises visitors a "vortex of good vibes".

A UFO scrapyard in the California desert.

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

Semi-recognized center of the world, with many oddities.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

These free-roaming horses were once destined to disappear from the land.

The "Father of Arizona" tried to build a Zoroastrian fire temple on the hill where he's now buried.

Florence's historic adobe county courthouse was turned into a historic site that honors one of Arizona's most prominent political leaders.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

What is the Thing?

Limestone caves with spectacular showcase chambers.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A short interpretive trail about one of the first human cultures in North America.