A reproduction of earth's many biomes.

This small memorial is dedicated to the Perryville State Prison firefighters who perished fighting the Dude Fire in 1990.

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

An urban laboratory.

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.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

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

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

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

This abandoned horse racing track was an exercise in hubris from its inception.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A quirky old tree covered in tokens, cans, and bottles of wishes.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.