A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

A historic ballroom host to famous performers from the big band era to 1980s rock.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

The birthplace of a titan of American cinema.

America's only nuclear missile silo open to the public.

Legend says train robbers stashed their gold within the depths of this unusual cave.

Limestone caves with spectacular showcase chambers.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Illegal drag racing two stories beneath Chicago’s streets.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A monument to the art of slicing people open.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.