The large vessel is known as world’s only full-scale replica of a Confederate ironclad.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

The house where the pulp fiction writer and Conan the Barbarian creator lived.

This overlooked courtyard and museum celebrate Benjamin Franklin's life and achievements.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

This beloved marketplace mascot poops money and grants good luck.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

Every Friday night, Appalachian string-bands turn this country store and soda fountain into a raucous jamboree.

A charming tour of the umbrella, tin-can, and drinking-straw capital of the world.

This park features a wooden causeway preserved since the Neolithic era.

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

Once America's tallest structure, now a Baltimore landmark.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

Steps from the site where Robert Johnson purportedly sold his soul to the Devil, you'll find this century-old barbecue joint.

At the birthplace of American railroading, a world-class collection of historic trains.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

This groundbreaking 16th-century map is known as "America's birth certificate."

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Time travel with sweets across history at this research-based candy store.