Vdara hotel maps.google.com – satellite view allows to see, that the concave – full rectangular – rectangular forefront facade has a horizontally bending radius r of about 100 m, which makes the focal length (f = r / 2) to be about 50 m, is bent about circular, is about 60 m broad and its area faces to SSW. The much less compact facade right behind the first one has a similar radius and faces to south. Vdara lies 36.11 degrees north, the air temperatures can rise pretty high in Las Vegas.
"'[Vdara] was a completely different problem,' said Viñoly, insisting he was following a masterplan that specified arc-shaped towers. 'We pointed out that would be an issue too, but who cares if you fry somebody in Las Vegas, right?'" : from "Walkie Talkie architect 'didn't realise it was going to be so hot'" by Oliver Wainwright, The Guardian, 6 September 2013
