All weekend
The Baltimore Orioles take on the New York Yankees for a pivotal four-game set. The Orioles are in the driver's seat on their way to what could be their first postseason appearance since the Clinton administration. Get your tickets in advance—Thursday's game, which includes the dedication of Cal Ripken Jr.'s statue, is sold out.
Friday
Wildlife expert and television personality Jack Hanna will speak at Goucher College in a fundraiser for the Maryland Zoo.
The Arc Baltimore invites the neighbors over for Backyard Fest at its offices in Stoneleigh.
Saturday
Excelsior! Baltimore Comic-Con returns, as does special guest Stan Lee, the revered "Spider-Man" creator and godfather of Marvel Comics. The convention is Saturday and Sunday, but Lee will only be there Saturday.
Environmental engineer and former astronaut Mary Cleave talks about her time in orbit for Saturday Science at Towson University.
Hampdenfest takes over the Avenue with music, games, a toilet race and The Great Baltimore Mac Off.
Learn how to paddle at Oregon Ridge Park.
The Fire Museum of Maryland honors county service and military personnel with Cruisin' For Our Heroes. Check out antique fire vehicles and peruse the fire museum's flea market.
The Legwarmers, an '80s tribute band, performs at Rams Head Live.
Visit the Ukrainian Festival at Patterson Park on Saturday and Sunday.
Sunday
Join the Great Prostate Cancer Challenge 5K run and one-mile fun walk in Towson.
Towson University president Maravene Loeschke and husband Richard Gillespie (a retired Towson drama professor) will perform "Love Letters," A.R. Gurney's Pulitzer-winning play.
What are you doing this weekend? Tell us in the comments!