One of the coolest yet least well-known places in Istanbul is definitely the Energy Museum at Santral Istanbul . Located at the tip of the Golden Horn on the campus of Bilgi University, the now museum and contemporary art space was once the first electric power plant in the Ottoman Empire. Visiting the Energy Museum feels like stepping through a time warp, perhaps into a more industrial version of Mad Men. When I entered the control room, it was hard not to envision panicking technicians frantically trying to stop the generator from exploding. I think I saw that in a movie once.
A free shuttle leaves from Taksim Square every half hour. Admission is 10TL; 5TL for students and teachers.