Aerial photography is not particularly easy to do. For one thing, you’re generally going to be in a moving airplane with crappy windows, or you’re going to be in a choppy helicopter. Considering the cost of plane and helicopter fuel (if you have your own), this also makes waiting around for better lighting somewhat less of an option. So to get a good aerial shot, you need to plan to be in the sky at the right time, know how to avoid window reflection, and be able to take the photo at a quick enough shutter speed that the motion of the airplane doesn’t make the image blurry.
For these reasons, an incredible aerial shot is that much more impressive than an incredible shot taken on land. Naturally, one of the favorite subjects for aerial photography are famous places and landmarks, and, unsurprisingly, they can turn out pretty awesome.