Hook onto some big Potomac River catfish on a quiet beach area along the river.
Parking along 36th Road in Arlington, VA, head down the path on the Gulf Branch Trail. Walk northeast for roughly a quarter mile, where you will intersect with the Potomac River. Find a spot along the sand, cast out, and watch the catfish bite! Chicken liver seems to work well.
Don't forget to have an active fishing license for Virginia.