These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Most-visited and most-photographed slot canyon in the American Southwest.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

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.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

A Mars simulation in the southern Utah desert.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

The longest living non-clonal organisms on Earth.

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

A shady solar power system that couldn't hold up to the harsh desert conditions.

Dig for your own trilobites in this goldmine of invertebrates.

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

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

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

This geothermal hot spring hides beneath a slowly growing mineral dome.

A replica that won't float away.

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

Despite sitting firmly in the global cradle of the Church of Jesus Christ of Latter-day Saints, this Hare Krishna temple is host to one of the largest color festivals outside India.