Michigan also will not allow you to carry in bars, churches, arenas and any buildings holding more than 2500, hospitals, dorms and casinos.
MSP - Pistol Free Areas
Digging around, apparently in PA the restrictions are:
State Parks - per DCNR Reg
K-12 Schools - per State Law
Court Facilities - per State Law
Pittsburgh International Airport - per County Ordinance
State Capitol Buildings - per State Capitol Police
plus the usual Federal restrictions, i.e. Federal buildings, etc.