Day of Fun for Children at Peirce Mill
Tilden Street (same as Park Rd) NW and Beach Dr NW, Washington, DC 20015
Peirce Mill in Rock Creek National Park
Games for children including a self-guided treasure hunt, water flow and gravity toys, checkers and other simple toys from the milling period.
Directions: http://www.nps.gov/pimi/planyourvisit/directions.htm; Pierce Mill: http://www.nps.gov/pimi/index.htm