Going to visit Baltimore, MD for about a day. What are some cheap sites to see?

(esp. anything that John Barth wrote about?)



Already know about Baltimore's Inner Harbor, the National Aquarium, The Science Center, and the USS Constellation.Going to visit Baltimore, MD for about a day. What are some cheap sites to see?
If you like a variety of cheap food, visit Lexington Market.

http://www.lexingtonmarket.com/index1.ht鈥?/a>



Babe Ruth Museum

http://baberuthmuseum.com/



If you have a car, Annapolis isn't far. There is the Naval Academy and nice view of the bay.Going to visit Baltimore, MD for about a day. What are some cheap sites to see?
I would go to the Chesapeake bay