The Erasmus bridge of Rotterdam, nicknamed "The Swan". 

Composited from a series of photographs taken between the golden hour of sunset and the blue hour and at night. I did this to get the sky, city lights and the bridge lit in the way I wanted. To me this is how I experienced it during the transition from day to night.

Above is the bridge with the blue hour sky, mixed with an exposure for the city lights. Below is a mix of sunset and again the city lights at night.