I snapped this photo a few days ago as I headed to this building for an Olympics-related event. (Yes, Olympics-related: current and past Olympians were present. They included water polo players, table tennis players, a guy who had just come from his event at the rowing competition, and a swimming gold medalist at Rome in 1960. The rest of us cheered them mightily.)
This should be an easy one, but tell me: who recognizes the building?
Hint 1: To gain access I had to surrender my phone, camera, and car keys, and go through airport-like security.
Hint 2: A major action sequence in my novel Kill Chain starts on the spot where I was standing when I took the photo.