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

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

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

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

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

This grand gothic brewery has been pumping out suds for over a hundred years.

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

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

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

The United States Capitol's former columns still stand.

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

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

A fleet of automotive automatons sleep in this otherwise unremarkable urban garage.

From the Difference Engine to the Cray-1, all under one roof.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

A whimsical antique shop with a strong air of mystery, filled with items from ages, and what feels like worlds, past.

An invitation-only museum of items natural and bizarre, arcane and exotic.