Ornate "Renaissance Revival" style building.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

The home of aviation trailblazers, in a remote corner of the big city.

Brooklyn's most iconic restaurant, resurrected.

Ride the subways of yesteryear.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Compensation for the destruction of a historic shipyard.

The factory that helped produce a dominant form of lighting before Thomas Edison.

Once home to the country's most gargantuan ships, this graving dock now waits for people to buy furniture.

"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!”

A historic arena where the Beatles played their first concert in the U.S.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Perhaps the most scandalous statue of America's first president.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A fountain standing as a testament to a doomed alliance.

A tiny park in the middle of some big power politics.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

Dine on dumplings at the oldest dim sum restaurant in New York.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

The only remaining historic maritime signal station in the United States.