I researched the distance to feet, meters, flight of stairs, and kilometers from ground, and safe to say, you can't survive from that fall. 8-11 flight of stairs is already a fatal blow, so your best bet is to reach the distance without landing on your feet or being caught in the day time, as the night time is much busier and colder. I think you can enter the building, but I don't personally know if you can have direct access unless you are a visitor or a tourist with free access to travel the area freely. I'm not from the area either, so I can't say for certain, but you can find more information on the website, I think, to get details on securing the area during certain hours.
Edit: 8AM-5PM