The former home of Samuel Clemens and family remembers the happiest period of the author's life.

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

This cave holds a surprisingly colorful variety of geological oddities.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

"I did this all while you were watching TV."

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

In the early 1800s, surgery was also a show.

One of the few surviving "Wigwam"-themed motels.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An unrealized dream to wirelessly electrify the entire Earth.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Fossils, railroads, and waterfalls!

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.