Step inside Lucy, the world's largest "elephant."

The United States Capitol's former columns still stand.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Winding country roads in eastern West Virginia lead to an extraordinary place populated by fiberglass giants.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Decades before the scandal, this staircase on the river was a literal "water gate."

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

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

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

A secluded fortress from the days of the Crusades that offers breathtaking views.

Where America's first doomsday cult awaited the end of the world.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.