Dude, my German is not very good, but I think I understand what I understand about German, I say yes, I'm not sure, but at night it works because it's an observatory, I do not know if I need anything to enter as a ticket or payments, but I think who needs a license to use the observatory, I hope I have helped and good day to my German friends, Tschüss.
I speak no english i speak german!
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