Oh Erika how it has changed!!! My parents are just weekenders and bought their place in Lusby about 15 years ago and like you said there was nothing but... a few years ago most of Crystal City moved down around the Pax River base. (Lochead Martin. Bowing, etc...) The had to keep up with all of the new business. It is amazing how much St.Mary's has chaged. Still very small town for me to live there but still friendly and beautiful.
The musuem is right before the bridge over to St.Mary's. It has been there for awhile. It backs up to the back creek where the light house is. Right before the "island" part they even got a McDonald's and Food Lion which was unheard of when we bought there. You really shoud drive out and see all the changes!