"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!”

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

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

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

At 207 feet, one of the world's longest continuous escalators.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

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

This pun was simply waiting to come to life, and one defense contractor made it so.