The National Park Service’s best-kept secret with views that rival any in D.C.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

There's a crumbling old mansion inside the Smithsonian National Zoo.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Fittingly, America's museum of architecture is itself a magnificently designed old building.

In an alcove of this historic library, you can find murals painted in the 1930s by an artist who went on to create some of Disney's most iconic animated films.

This nine-story building is the oldest standing skyscraper in D.C.

Dedicated to the man who created the first radio wave communication system.

D.C. once had its own tiny rival to the New York Stock Exchange.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

Also known as the Founding Church of Scientology.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

One of the last mosaic tile facades found in the city.

When it opened during the final years of the embargo, all the drinks and cigars were free.

The last remaining building in Washington, D.C., built by H.H. Richardson, one of America's most iconic architects.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

This poor little statue is the most vandalized memorial in Washington.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A rotating cast of guys and dolls in front of a Washington, D.C. building.