On the south side of the bell tower is the cornerstone blessed by Bishop McNally, builder of the cathedral and fifth bishop of the diocese. It is a stone excavated from the Roman Catacombs to symbolize the cathedral's unity with the ancient Christian church, the first generation after Christ. The cathedral is perched atop a hill overlooking Highway 403 leading in towards the rest of Hamilton and one travelling towards Oakville, Mississauga and Toronto. Christ the King Cathedral is close in proximity to the Hamilton-Wentworth Catholic District School Board administration offices, and the offices for the Diocese of Hamilton. The offices for the diocese are located just off to the side of the cathedral, next to the rectory.