Theodore Roosevelt Island
Theodore Roosevelt Island is a 91 acre island located on the Potomac River; access to it is from the GW Parkway in Arlington, VA. We went on a hot day (90 degrees!) and walked around the whole island. Tom was the navigator for our trip. Almost to the end, Quinn was afraid we were going to have to turn around and walk all the way back. He said if we found a dead-end sign, he was going to kick Dad out of the family!
http://www.nationalparks.com/theodore_roosevelt_island_park.htm