This is an overhead view of a building at the Naval Amphibious Base Coronado in San Diego.
What’s up with the swastika building? The base was formally commissioned in 1944, smack in the middle of World War II. It’s just not possible that the architects didn’t know what they were doing!
Here’s another shot from GlobalSecurity.org, just to show that this isn’t a Photoshop job:
Are there other such buildings on American military bases around the world?