I don't know if these count as cityscapes or not. They are from a fireworks display at the office where I used to work. It was when we were building a second office tower.
That's fireworks reflecting off of the new building.
Canon 5D Mark III, 33mm, f/8, 2.5s, ISO 200
Fireworks and their reflection off of the old building.
Canon 5D Mark III, 17mm, f/8, 2.5s, ISO 100