Going to Boston mainly for a day game at Fenway. Landing at 8:10 am and leaving at 7:04 pm. What attractions near there so I don't spend most of my day in an uber or public transportation. We are two adults.
MFA. Expensive admission, $25 I think. Free after 4pm on Wednesdays.
Isabella Stewart Gardner Museum, free if your name is Isabel, Isabella, etc.
Prudential and Hancock towers. In the pre-9/11 days, it was a thing to go to the top and see the observation deck. Nothing special, IMO.
The Public Garden, inc. Swan Boats, are only a few T stops or a short Uber ride, even walkable if you have time. Brookline kosher eateries are about 1.5-2.0 miles away.