Well, I have to compare this to Cathedral Basilica...

Well, I have to compare this to Cathedral Basilica of Saint Louis, Mo.
If your intend to come here is just for sight seeing, you can forget about it. Parking is the worst. You know you're lucky if you find one on the side streets after circling around the neighborhood for 15 minutes. The parking garage in the Grace Cathedral is a money making machine. $33/hr or there is another one down the block for $40/hr.
There is not much to see inside here or anything better than any other bay area or northern California old Catholic church. If you want to be impress with art, history and architecture, go see the Basilica of Saint Louis.