This remote camping site offers incredible stargazing opportunities.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

This path is named for a mythical half-boar, half-deer creature that once roamed the Green Mountains.

One person's lost luggage is another person's treasure.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This spectacular track has run continuously since 1882.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Found: Garden of Eden in Miami-Dade County, Florida.

This house was largely built out of hundreds of thousands of discarded glass embalming fluid bottles.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A New Hampshire grave with a grudge.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A mysterious monument covered in a binary code marks the heart of tech.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

An acoustic anomaly with a mysterious cause.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

America's oldest archaeological site or a muddled case of wishful thinking.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

It was founded by Ralph Nader to educate the public about an often-maligned area of law.