Historic home of America's sweetheart sharpshooter, Annie Oakley.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

Built by the patriotic residents of Boonsboro in a single day.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

A Civil War Museum with some notable medical antiques.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

This abandoned sea fort has become an accidental bird sanctuary.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

A priceless collection of the Nation's cryptologic history.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

Walk through the history of American pop culture.

The land is home to swimming ponies and a legendary 18th-century treasure.