First off, you want to go to Baltimore Jewish Life for all things Minyanim. Will give you times and addresses. As far as things to see: You have Downtown which has the inner Harbour and the Aquarium. There is Discovery Zone and also the Baltimore Zoo. There are plenty of restaurants. There is Dougies, Accents, Kosher Bite, Knish Shop David Chus and Umamis for meat. For milchigs you have Goldbergs Bagels, Caramels, Tov Pizza, Mama Leahs, Eden Cafe, Cocoachinos and a few others I cant think of right now. Star K is a good Hechser and there are other Hechsherim which I personally Use but you need to inform yourself on those.
Hope this helps.