USS Long Beach was originally all-missile; she got a couple of open-mount five-inchers added after a failed SHOOTEX for President Kennedy.
You're thinking of the USS Newport News, the last all-gun cruiser in the US Navy.
I knew it was one of those "squid" towns. Thanks
Yep. She was the only nuclear cruiser as well. The Chicago and the Albany also got port-and-starboard open 5-inch mounts. It was my first duty station on Chicago. Those steel seats were like ice cubes at extended GQs and they didn't have seat belts (and I weighed about 120 pounds at the time - and oh, my, that water looked cold). I got a real thrill when I read "USS Wasp" on the mount. That thing had been places.