A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

This sprawling bookstore spans four floors and has more than a million books in stock.

Pizza with a side of fine art.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

This pebble beach is so beautiful that taking its rocks is against the law.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Years of archaeology, just chillin' by the water cooler.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

In which a local geological marvel becomes a quaint roadside attraction.

A cave's rare beauty held a cavernous secret hidden underground.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

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

The highest point in Virginia can only be reached by passing through ponies and flowers.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

This cave holds a surprisingly colorful variety of geological oddities.

This freshwater spring fills with 10,000 gallons of water per minute.

A massive sea stack famous for its appearance in The Goonies.

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

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.