Pittsburgh is stunning - the view of the city at night coming out of the Liberty Tubes that run through Mt. Washington, the Carnegie Museum, the Pittsburgh Zoo, the three rivers, the Duquesne and Monongahelea inclines running down Mt.Washington.
A bit South, is Frank Lloyd Wright's famous Fallingwater house and the nearby Youghiogheny River and rapids.
The amusement park - Kenneywood - doesn't open until May.
But the Pirate's season has started. You can park at Station Square on Carson Street along the Mon River and take a ferry to the ballpark - I think.
There is also a wholesale and retail food selling area in the North side, called the "Strip District".