Stirling Castle is an absolute must and the Church of the Holy Rude is a 2 minute walk. 

Wallace Monument is also nearby but USE the FREE shuttle up the hill unless you are in great shape it is a killer walk up hill then numerous steps up to the top of National Wallace Monument . 

The National Wallace Mounument is located atop the hill that Wallace and his troops descended in going into battle at Falkirk. At various levels in the monument are exhibits on Scottish history, William Wallace and the contruction of the National Monument. The actual Wallace sword is located in the Monument. From the top, there is a splendid view of the surrounding area. Arthur's seat in Edinburgh can be seen from the Monument, as well as the battlefield which lies in the valley below. The Monument is well worth a visit, especially if you have kids or William Wallace fans.