Frederick Law Olmsted designed this lantern — one of fourteen — which are located around the Capitol building. In the last year they’ve restored four of them, but because of the fencing and guards around the building, you can’t get close anymore. https://www.aoc.gov/explore-capitol-campus/blog/olmsted-lanterns-restoration
Oh my! Those are amazing! So glad they're being restored. I wonder if the days of roaming the Capitol grounds are over for good. I hope not. Olmsted was a genius.