Anonymous wrote:And if you are coming on an exchange trip to Anerica, it never hurts to see: Archives, Library of Congress (my 13 year old asked for both after his history class this year & Both DCs (11&13) loved them!), Mount Vernon & possibly a weekend trip to Wiiliamsburg (a day in the historic town, a day a Busch Gardens). And do not miss the Beach at the Building Museum-- lots on fun for ages 1-100.
Is there anything to keep preschoolers engaged at the Archives or Library of Congress? Not being snarky -- just never looked at it from that perspective before and from what I remember I envision these as places that might require lots of kid-wrangling. Maybe the teen(s) could go solo if you can get the to/from the Metro. Both buildings are easily visible from their respective Metro stops (assuming Capitol South for LoC) and Google Maps is a useful tool for showing people taking public transit what they should be looking for when they get off the train or bus.
Re Mt Vernon -- check out the whiskey distillery and the boat tours to see if they might be of interest.