A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A secret greenspace hides atop a Capitol parking garage.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

These abandoned waterworks are crumbling into the Potomac River.

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

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

Also known as the Founding Church of Scientology.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

There’s a special club house at the top for the bell ringers.

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

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

The span is crooked and made from two older recycled bridges.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

The world's oldest soul food restaurant is also one of its best.

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

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This lovely pocket park is one of the most under appreciated in D.C.

Home to a vast and influential collection of Shakespeareana.

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