John Hendrix predicted the creation of the "Secret City" built as part of the Manhattan Project.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

People escaping slavery may have hidden inside a corpse vault.

The first lookout in Yosemite.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

A monument to the groundbreaking environmentalist sits near the place where she first experienced the sea.

Mural fragments and various sculptures honor the longtime artist.

In 1777, two men were killed after being struck by lightning at the same time.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

Built in 1821 using rooms from another estate, the Phillips House is the only historic home on scenic Chestnut Street open to the public.

A steampunk wonderland that preserves America's history of industrial innovation.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

This exhibit is devoted to the games and wonder that Hasbro has brought children worldwide.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Wander the sprawling living museum on the site of one of a 16th-century community.

Centuries-old hoofprints and wagon tracks reveal themselves after a good winter storm.

Site of an oft forgotten and revolutionary battle.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

A famous—but endangered—plant is on view at an unassuming nature preserve a quick drive from Myrtle Beach.

Chicago’s incendiary role in the labor movement.

On May 2, 1845, crowds gathered to watch a clown and four geese sail upstream in a bathtub. Then disaster struck.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

Don't get it twisted: This is the oldest pretzel bakery in the United States.