A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

A miniature city built by a single hunchbacked monk.

A former taxidermist has turned his old shop into a folk art mecca.

A phallic shrine to a princess goddess in Krabi, Thailand.

This replica of the Greek structure is in the heart of Nashville.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

A monument celebrating the idea of reaching inaccessible places.

Florida castle built with aluminum printing plates.

A mysterious castle built as a monument to lost love.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

This iconic science fiction house still looks like something from the future.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.