For a visit to the Potsdam Biosphere a proof of vaccination or recovery is required for all persons over the age of 18. Please show this proof when entering the hall. Thanks very much. From January 17th, 2022, the 2G Plus rule will apply to visits to our gastronomic facilities. If you have any questions, please do not hesitate to contact us at info@noSpambiosphaere-potsdam.de or 0331 - 550 74-0.