"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A historic ruin just 20 feet away from a busy highway onramp.

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

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

An overlooked memorial honoring the local Washington residents who died in World War I.

The national park was once a plantation estate.

Washington's iconic carousel has a nice piece of Civil Rights history.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

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

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

I-95's Tijuana-style celebration of kitsch at the Carolina border.

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

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

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

A scenic fort on the harbor protected Philadelphia from an attack that never came.

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

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

The nude sculpture on this fountain shocked conservative townsfolk when it was first unveiled, but not as much as the dead body found in it decades later.

The statue of the famous elephant who was the original source of the word "jumbo".

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.