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

A museum dedicated to exhibiting remarkable outsider art.

A former major munitions plant that has been converted into a sprawling art space.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The United States Capitol's former columns still stand.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The site of the climactic scene from the classic horror film is now a historic landmark.

Home to items never before seen by the public.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Largest Roman Catholic church in North America.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A haunting tribute to pioneering photographer Clover Adams.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.