PRODUCTION - 14 December 2021, Hamburg: A sign indicating that masks are compulsory stands in a foyer of the Elbphilharmonie. For five years now, the Elbphilharmonie has been shining above the port of Hamburg and it is impossible to imagine the Hanseatic city without it as a cultural landmark. (to dpa "Five years of the Elbphilharmonie: From a million-dollar grave to a cultural landmark") Photo: Daniel Reinhardt/dpa