Just a consideration:
Baltimore:
USS Torsk
USS Taney
USS Constellation
Lighthouse Chesapeake
Fort McHenry
Take a tour on a Duwk (yes, you do go into the bay in the DUWK

)

Hooters
1 hour from Washington:
Hazy Air and Space Museum or any museums in DC those from afar would like to visit. Go to the mall and see the WWII memorial. Really, the cost to get there is all that it runs you. The museums are free as well as all the momuments. Get Jim over here so he can see how DC cops handle it....they look the other way.