A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

A desert settlement founded and later abandoned by Hawaiian members of the Church of Jesus Christ of Latter-day Saints in Utah's Skull Valley.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

This former rail stop in Utah was abandoned, repopulated by some nostalgic friends, and now is home to a single DIY aviator who lives in a hangar.

A museum has some wedding cake dating to the Teddy Roosevelt administration, and some bacon from FDR's.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

Largest man-made excavation on earth!

Oddly shaped rock formation, misassociated with a nearby utopian community.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A small flooded ghost town with a few scattered structures remaining.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

California's own majestic geyser is powered by a subterranean volcano.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

Lemon Grove, California is known for its giant lemon...and mummified bodies.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."