Looks like there is no separate link for GABP but wanted to add a couple of things to do near the ballpark if you are in Cincy to attend a game.
Carew Tower Observation Deck is just a few blocks from the stadium and affords a great view of the surrounding areas. Just a few blocks from the stadium across from Fountain Square. Just $4 per person.
https://roadtrippers.com/us/cincinnati-oh/attractions/carew-tower-observation-deck
Moerlein Lager House: Just across from the stadium and had a great view of the river if you sit outside or near the windows. I believe PB69 said he went here while visiting. Great selection of Moerlein beers and ales along with others. The Moer-Burger was great: in addition to the burger it included bacon, pastrami, cheddar cheese, and a fried egg. Guaranteed to harden your arteries. Wife had the fish tacos and those were good also. I imagine it gets quite crowded on a game day.
http://www.moerleinlagerhouse.com
Overnighting in Cincy to/from Chicago next month (actually staying across the River in Covington), but, sadly, no time to further explore the city on this trip...
