The scope of the project was to create an interactive lighting design to a freely chosen urban area in Copenhagen while acknowledging the principles of the Copenhagen lighting masterplan and sustainable development. The chosen space for the project is the underpass between Vesterbro and Jernbanebyen in Copenhagen, and the entrance areas linked to it. The specific site was chosen for the potential it had regarding enhancing transition, promoting historical heritage of the Railway city and linking the isolated Jernbanebyen better with the rest of Copenhagen. The final design proposal is a mixture of taking advantage of the constructional elements already present in the underpass, and suggesting a new sound responsive lighting installation borrowing inspiration from the prominent railway theme of the area.