This was actually an old personal project I did when first starting 3d. I revisted it recently using skills I have picked up over the last couple of years, below is the before shot I did. I actually lived in this tower and modelled this completely by eye from photo references and surroundings. This is my first skyscraper scene.
Software used: 3ds max, vray, photoshop, forestpack pro
Behance: http://bit.ly/1pF4yWF