So here's a good idea if you go to Shanghai or Beijing, or any of these Asian megacities that have city-planning museums. These huge models are great for scouting sunset shots from a nice perspective. I usually use Google Earth, but taking photos of downtown areas require some thought about the altitude of the shot. So, for example, you don't want to go to the tallest building in a city to take the photo, because you actually want the tallest building to be in the photo. So that means you need to find a nearby building that is "high enough" that still has a good angle towards the big building. Also, preferably, you'd like that second building to be east of the big building so there is nice light at sunset. Well, there's a lot of things to think about, and these models are a perfect playground for perspectives.