#1.
112 Waterfront Street, National Harbor, MD 20745
Opening in 2013 at National Harbor, the National Childrenâs Museum will serve millions of children and their families each year through a new 150,000 square-foot experiential learning center and dy... More on MuseumsUSA.org
Even Albany has a children 's museum. More on GoCityKids

#2.
6411 Oxon Hill Road, Oxon Hill, Maryland
Old-fashioned farm with animals, daily chore demonstrations, hay barn, feed room, equipment shed, workroom;... More on Search.visitmaryland.org
free children's farm; can learn to milk a cow for free . More on GeckoGo

#3.
1411 W Street, S.E., Washington DC, District of Columbia
Frederick Douglass, "The Lion of Anacostia, " purchased Cedar Hill in 1877. Visitors are welcome to explore... More on Heritage
As I read somewhere, we saw one of the best views of DC from there. More on TripAdvisor

#4.
Oxon Hill MD 20745, United States of America

#5.
6701 Oxon Hill Road, Oxon Hill MD 20745, United States of America
Inscription. [ Panel 1 :], John Hanson: Honored Patriot of the American Revolution, [ Picture of John Hanson and Seal of the "Sons of the American Revolution" ], [ Panel 2 :], Born 3 April, 1721, Mullberry Grove, Charles Co. MD. Died ... More on HMDB

#6.
Maryland
The Woodrow Wilson bridge trail provides a needed connection between Alexandria and Prince George's County. In Maryland, the trail links to the new Potomac Waterfront Community Park, National Harbo... More on TrailLink.com
It's all up and down the a hill, but worth it, there are scenic rest stops on the bridge, and an amazing little park that spans over 495 with gorgeous views of the Potomac. More on TrailLink.com

#7.
Oxon Hill MD 20745, United States of America
Inscription. President of the United States in Congress Assembled, 1781-2, died November 15, 1783 at “Oxon Hill”: 1½ miles west of here. The original mansion house, built by the Addison family, was burned February ... More on HMDB

#8.
Roosevelt Island, Washington, DC, United States
One of Theodore Roosevelt’s greatest legacies was his dedication to conservation. Today, this island stands... More on Nps.gov
Parking is limited, so it's best to get there early on weekends. More on TripAdvisor

#9.
101 Independance Avenue, S.E., Washington, DC, 20540
The Library of Congress is the de facto national library of the United States and the research arm of the U... More on En.wikipedia.org
It was a great experience and will worth the time. More on Yahoo! Travel

#10.
Independence Ave SW & 23rd St SW Washington DC 20001
In this temple, as in the hearts of the people for whom he saved the Union, the memory of Abraham Lincoln i... More on recreation.gov
My kids were too young to appreciate the Lincoln Memorial (1 and 3) but they liked the fact that it was s... More on Trekaroo
