America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

The tombstone of the founder of the lost town of Ogletown is now stuck inside a traffic median.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Unique tower has outlasted a takeover of the company.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

A lone grave is quietly tucked away in Kanawha Riflemen's Memorial Park.

Thousands of tiny squares in different colors make up this piece of street art.

This tiny man looms large over downtown Charleston.

The highest point in Maryland is only accessible by hiking through another state.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.