The photos above were taken at the San Francisco DeYoung Museum's Turrell Skyspace. It was a hidden area off to the side of the museum's garden. To get there, I had to walk through a deserted walkway (1st photo). At the end of the walkway, I encountered a circular inner wall and a circular outer wall with a narrow circular pathway in-between all the way around the structure (2nd photo). Next, you will see the interior of the skyspace with a one-piece curved cement bench (photos 3-5).
What could this Turrell Skyspace be used for? Perhaps a location to celebrate one's solitude, look into the sky from a seated position, or enjoy a unique audio performance from anyone who is willing to play. Watch one such performance on a YouTube video above.
Have you heard of the Turrell Skyspace? Here's a summary of what I found on the internet about James Turrell, the artist. A James Turrell skyspace is an enclosed room large enough for roughly 15 people. Inside, the viewers sit on benches along the edge to view the sky through an opening in the roof.