The birthplace of the Ford Model T is now a museum full of antique cars.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

There’s a special club house at the top for the bell ringers.

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

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.

A historic arena where the Beatles played their first concert in the U.S.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The most accurate timepiece in the world.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

What was once the largest NFL stadium.

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

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

An ever-evolving wall of graffiti art off East Liberty Street.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Advice-columnist's bell tower, paid for with pennies.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

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