embassy of California
California doesn't actually have an embassy. This building is the University of California, Washington Center . When I said it was the University of California, my son misunderstood and said "THE EMBASSY OF CALIFORNIA????" which I thought was pretty funny.
Now, I won't even comment on the circular thing that sits atop of this building... but any visitor or resident of DC can tell you they are EVERYWHERE. The first time I saw one, I thought it interesting... now ... no comment.