Coors Field is in the Lodo, which is pretty fun. There are a lot of places to eat within 3 or 4 blocks the of the ballpark. We were there this year and found the ballpark food just OK. For other sites, the Molly Brown house is worth the money to go see. Tickets should be cheap on Stub Hub. Enjoy!
Down the street from Coors Field is the Ball Park Museum. Very cool place - https://ballparkmuseum.com/