Sunset glow in Sydney

It's usually difficult to capture artificial light on architecture and still have a sunset glow in the sky.  Sometimes, though, the lights come on early enough for this to happen (without having to make a composite of two images).  Such was the case in Sydney, Australia a couple of days ago.  This is the famous opera house and the Harbour Bridge, and you can see with the proper exposure I was able to capture the unique contrast of the lights on the building plus the beautiful sky.  In order to show detail throughout the image, I had to use HDR with two f/stop increments between the three exposures that comprised the composite.  I shot this with the new Canon 100-400mm telephoto at f/9, 250 ISO, and aperture priority.  I used a tripod, of course.