An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

The extensive collection of an amateur naturalist.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

The largest island on the great salt lake is home to curious creatures and strange stories.

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.

A stone pillar commemorates the surrender of the extraordinary Apache leader.

Collection of vintage trailers double as hotel rooms.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Stairs often replace streets on the steep slopes of this old mining town.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

Home of the "true" equator.

The first permanent memorial to a unique secret weapon of World War II.

A former department store turned into a quirky restaurant.

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

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A geological mystery on Camelback Mountain.

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

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

An homage to everyone's favorite prehistoric cartoon family.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.