What time does the Eiffel Tower light up? You'll be able to see the well known Iron Lady lit up every day from sunset to 1AM. During summer, it turns of one hour later at 2AM.
Is Trocadero safe at night?
Yes, perfectly safe but as always in a touristy area, be aware of your surroundings. I was there around midnight a couple of months ago and there were plenty of people out & about.