The National Archives is the ultimate historical storage unit. Every significant document and tangible piece of history is cataloged and stored here. The site houses everything from the Declaration of Independence, to the Louisiana Purchase, to the Watergate tapes. When you walk in, you'll be struck by the fortuitous, 75-foot rotunda where the most treasured documents are on display. Maps, movies, photographs, texts and more are all here, and you can delve into your own research if you are looking for something in particular.
One of the most emotionally-charged sites in Washington, DC is the Vietnam Veterans Memorial. The dark, black granite walls are inscribed with the 58,209 names of Americans missing or killed in the Vietnam conflict. This V-shaped memorial design draws you in and allows you to not only take in the monument's magnitude, but it also allows you to have a private, intimate moment within the monument's breadth. While you're visiting this monumental attraction, make sure you see Frederick Hart's "Three Soldiers" life-sized sculpture made of bronze that portrays three young servicemen.
Take the plunge just a few minutes away from the heart of downtown Washington, DC by enjoying the various water sports and activities you can find at Theodore Roosevelt Island. Tackle the Potomac's Great Falls or enjoy some good exercise rowing a canoe or kayak. You can bring your own boat or rent one at Thompson Boat Center or Jack's Boathouse near the Georgetown Waterfront.