[IggyWH]

Pittsburgh -

Eat : Primanti Brothers (you can get it in the stadium or go to Market Square [couple minutes from the stadium on the other side of the river, walkable but probably best for a taxi since you don't know where market square is])

Tourist : If you're going with a chick, check out Mount Washington. You can take an incline up and down so added tourist oppertunity. Not much there but it's a great view of the city.

The Point is also nice to check out plus there's a bunch of museums if that's your cup of tea.