I thought it was a park to walk through, but it was a graveyard. It is the Alter Friedhof der St. Nikolai und St. Marien Gemeinde in Prenzlauer Allee. We walked through, not sure it was possible to exit amidst the dead trees and headstones. Then to Volkspark Friedrichshain, circling around the central hill above a thinly glazed lake, ducks pushed forlornly to one coast as the cloud-dulled sun failed.