Seller of surplus nuclear research materials.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

Dedicated to one of the most successful boxers to compete in the heavyweight division.

A 20-foot-tall quarter commemorates George Washington’s ties to Bedford County.

This large stone residence served as a field hospital during the Battle of Gettysburg between stints as a tavern.

At the end of a street is a statue with no indication as to why it was created.

A full-service gas station known as the oldest in America.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

A tragic mystery left this boy nameless for 65 years.

Since the 1930s, this Pennsylvania town has celebrated the humble tomato.

Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

A museum dedicated to the history of electric interurban transit near the home of the first electric trolley system in the United States.

Believed to be the birthplace of the United States Marine Corps.

A comprehensive collection of toy and model trains, largely from the mid-20th century.

An abandoned incline railway site is now a green space with six acres of trails connecting hilltop neighborhoods.

This iconic Lancaster everyman has been reading the same story since 1980.

A tribute to those that perished during the American Revolution.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

Overshadowed by quilts, the artistry of these patterned textiles went underappreciated for too long.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

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

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.