Any recommendations for the DC / VA / MD / WV area?

Because of a trip to Arizona, the first time we'll get the TM out will be Memorial Weekend at Greenbrier State Park.

So I convinced my wife that a preliminary trip was in order with a few of my friends to "test" out the TM and get it ready for the summer. I'm too excited to wait until the end of May.

So, the question is, any recommendations in the Mid-Atlantic for a good place to take the TM for a couple of guys?