Home to items never before seen by the public.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

The solitary grave of a schooner captain killed by lightning while serving biscuits.

The taxidermy remains of the most popular pony in children's literature.

Both the building and blades of this reconstructed 19th-century windmill can turn in a breeze.

Stone markers on the campus of Gallaudet University commemorate a peculiar school tradition.

In 1932, Americans honored their first president's 200th birthday by planting trees.

For over 70 years, this house was home to a pioneering Black artist and educator.

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

Thousands of Matchbox cars spanning generations call this New Jersey barn home.

This Great Depression-era creation was once known as the strangest house in the world.

Come for the Italian food, stay for the taxidermy and giant statues.

Randy Senna's Fascination and retro arcade is home to the last Fascination game in New Jersey, and one of seven remaining as of 2021.

Step inside Lucy, the world's largest "elephant."

Once forgotten, this strip of sand was a rare beachside haven for Black Americans in Atlantic City.

The third-tallest lighthouse in the United States stands as a reminder of Atlantic City's early days.

Memorial built in 1922 in remembrance of WWI casualties.

If it feels like a speakeasy, that’s because it probably was one.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

The "Key of Keys" for Washington, D.C. and the apocryphal landing place for the military campaign that started George Washington's career is now at the bottom of a well.

A hidden courtyard houses early 20th-century plaster masterpieces.

This Masonic lodge was the first major private building to be constructed in Washington, D.C. after the Civil War.

Born a slave on the Arlington estate, Parks dug the first graves at Arlington National Cemetery, and was buried there, too.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.