Peter, there's something very church-like in that shot.
It also reminds me of the Scottish Parliament building which was apparently designed by a Spanish architect who died, and then the project completed by his wife. This is from memory and I made no notes, but I'm absolutely certain that Isaac will know...
Anyway, the point is that they apparently and collectively designed some sort of sloped sitting area which, in the event, is too low to permit ease of sitting other than for the special Swiss gents from Zurich who deal with finance. Whether this was, in fact, a purpose-built option designed to keep out the international press whilst facilitating secret talks remains to be disclosed, but then with so many leaks it's sure the "truth" will surface in the end, and Gulag will publish.
Disclaimer: this could be entirely another place of which I think, but it was definitely Edinburgh, as in Scotland.
Rob C