Since some folks will be making travel plans to come to Baltimore soon - to catch airfare sales, I wanted to highly recommend that you try to catch a late afternoon flight. The reason is that I think you'll want to visit the HUGE Baltimore Farmers Market on Sunday morning till afternoon. I was there in October when in for the Board Meeting and was blown away. The fresh produce is great but it's IMHO the best place for Brunch. There is a stand making (at least) THREE-egg omelets with filling and potatoes for 8 bucks! Crepes too,. And some of the best roasted coffee I've had in years (and I'm a coffee connoisseur . The line is long (but moves fast) so you know it's popular. Lots of free samples of fruit too. If you love great coffee you might want to take some home.
It's no more than 15 minute walk in a safe direction.
I know lots of folks run home early but if you can stay you'll spend AT LEAST 2 hours at the Market. I can't wait to go back.