Washington's National Cathedral will soon be hosting same-sex weddings. That said, it's not as if you can just walk up to the place hand-in-hand. We researched this a long time ago and there are still some (completely understandable) restrictions on just who can and can't use the place. I mean, expecting a couple to be actual Christians, and a member of that church? The nerve!
It passes my Four Rules, so it's officially none of my business.