I grew up in Maryland. I really like the Gettysburg, PA Battlefield and Williamsburg and Jamestown, VA for places to visit. You can spend as long as you want around Washington DC. The Bay is a great place to visit but best seen by boat.
Many people enjoy visiting the Carolinas. I like the beach and Outer Banks and Charleston.
In 1968 I spent every weekend in Ocean City chasing girls and surfing. It was so much fun, I finished college and moved to California in a VW bus. I would not even recognize OC now with all of the high rise buildings.