This art center is way beyond your average pumpkin-carving operation.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The Ozarks' strangest dwelling.

An adorably sweet display of sculpted Precious Moments figurines.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

The oldest continuously occupied public building in the United States.

An off-grid art installation that encourages its visitors to imagine a world without waste.

A hand-built folk art installation covered with messages of God's love.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Instead of faces, these sculptures have barcodes—statements on societal dehumanization.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

Only six people can sit inside this delightfully quaint sanctuary.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

Quite possibly the last cross all humans will ever see.

This collection honors the iconic, and proudly American lighter that just won't quit.

Toxic waste disaster that founded the Superfund program.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.