Urban Pirates
A swashbuckling adventure on a pirate ship in the Inner Harbor! As you might expect, this is very popular with younger kids.
Baltimore Comic-Con
Not quite as big as the Comic-Con held in San Diego, this comic book convention has grown since its humbler beginnings in 2000. It currently hosts the Harvey Awards presentation ceremony, honoring the best comic book professionals as voted by their peers.
Rams Head Live!
Concert venue for rock bands, comedians, and many more.
Landmark Theatre
This is a really nice movie theater for independent and foreign films, with things like comfy leather seats, no cell phone reception in the theater, wine, cocktails, crab cakes. Since they are serving liquor, they are able to keep the ticket prices down: $10.50, matinee: $8.
Baltimore Heritage Walk
Guided and self-guided three-mile tours departing from the city's Visitor Center (http://baltimore.org/visi...), and covering territory through Downtown, and historic Jonestown, Little Italy, and Fells Point. Free guided tours, 1 May-2 November, departing 10AM.