When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

Dozens of playful sculptures blanket these 200 rolling acres of farmland in an ode to art and landscape.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

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

There are eight natural springs around town, each with a slightly different taste.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

Quite simply the largest tree in the world (by volume).

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

A semi-scholarly approach to sex.

The site of the deadly Triangle Shirtwaist Factory Fire.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

America's largest man-made forest was planted in an effort to bring back the past.

The world's longest known cave system.

Mile-long cave system near Great Smoky Mountains.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The world's largest rotating world.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.