Station Square on the other side of the river has a bunch of restaurants and a good view of the city. Head to the top of the mountain and have a seafood dinner at Monterrey Bay. The top of the hill is basically the same height as the city buildings, so you have a pretty neat view. The place is somewhat pricey, but it's a neat thing to do in PIT. You'll need a reservation, but it is definitely a touristy thing to do when in PIT. I'm sure a concierge will be able to show you how to get there.