Riviera is certainly right up there from a strategic standpoint, as is Merion.
But golly gee Beaver, there must be something sadistic and masochistic in my makeup that I seem to really enjoy wildly excessive and penal bunkering that attracts me to courses like Pine Valley, Oakmont, Lytham, Muirfield, Garden City, Hollywood (would have LOVED to see it before about 70 were removed), Sand Hills, and the one I'm really looking forward to seeing this Sunday, Shinnecock Hills.
In fact, I've been looking at some old pictures of Shinnecock this evening, when they used to have some serious "cluster bunkering" on 5, 6, 8 and some others which have been considerably reduced over the years and wondering if anyone knows when and why. I see that architect William Mitchell did some work there in 1967, and I'm guessing that they may have become a maintenance headache.
Still, some of the ground level photos in Dr. Quirin's book, "America's Linksland" are staggering!