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

The United States Capitol's former columns still stand.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The school tested mustard gas for the U.S. Army during World War I.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

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

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

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

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

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

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

This statue is dedicated to Grace Sherwood, the last person in Virginia to be convicted of being a witch.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

The historic home still shows the scars from a little run-in with the British in 1813.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

The maritime museum that boasts the largest nautical library in the western hemisphere.

America's second-oldest brick baseball stadium was home to a legendary WWII series that only sailors got to see.