The unbelievably opulent home built for an infamous newspaperman.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The largest drain hole in the world.

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

An eatery for UFO seekers on the Extraterrestrial Highway.

A spiritual vortex among the red rocks in Sedona.

An artificial crater field that trained astronauts for lunar exploration.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The oldest continuously occupied public building in the United States.

For 150 years one family has been producing the iconic hot sauce on a bayou island made of salt.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

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

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

The world's largest military aircraft cemetery.

Legend says train robbers stashed their gold within the depths of this unusual cave.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The first Protestant church in Arizona and only Gothic Revival style adobe church in the world.

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

Quite simply the largest tree in the world (by volume).

Thousands of turbines whir at the origin of North American wind power.

Everything you always wanted to know about borates is here.

This giant temperature attraction created some giant electric bills.

The world’s largest concentrated solar plant generates as many problems as megawatts.