A beautiful geyser under environmental threat.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

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

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.

Home to items never before seen by the public.

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

The United States Capitol's former columns still stand.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A quintet of history museums make this Virginia graveyard as much a resting place for funereal history as it is for people.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.