A young visitor interacts with a baby hippopotamus swimming in its enclosure at the Berlin Zoo on January 1, 2018. Tourists and locals flocked to the zoo in the German capital on the unseasonably warm first day of the year. (Photo by Odd Andersen/AFP Photo)

Dancers perform during a general rehearsal of “Kreatur” (Creature) by German choreographer Sasha Waltz in collaboration with artist and fashion designer Iris van Herpen and light designer Urs Schoenebaum in Berlin, Germany on June 8, 2017. (Photo by Stefanie Loos/Reuters)

Raccoon Fritzi eats at the home of veterinarian Mathilde Laininger in Berlin, Germany, January 27, 2022. She cares for four raccoons that can no longer be released into the wild. Raccoon Fritzi has an Instagram account with ten thousand followers. (Photo by Hannibal Hanschke/Reuters)

Dancers perform inside of transparent balls during the Botanical Night at Botanical Garden in Berlin, Germany, 20 July 2018. During the Botanical Night a 16 kilometre long path along the flower beds and several themed gardens are illuminated and guide to many attractions. (Photo by Hayoung Jeon/EPA/EFE)

An a music therapist plays harp during treatment of patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at Havelhoehe community hospital in Berlin, Germany, December 6, 2021. (Photo by Fabrizio Bensch/Reuters)

Dancers wait backstage during a dress rehearsal for the new “THE ONE Grand Show” at Friedrichstadt-Palast in Berlin, Germany, September 21, 2016. From silver body suits with giant mohawks to revealing fishnet tops with huge feathers, colourful, extravagant costumes take centre stage at a new theatrical show in Berlin. French couturier Jean Paul Gaultier has swapped the Paris runway for the German stage to create some 500 costumes for “THE ONE Grand Show”, an 11-million euro ($12.2 million) production showcasing plenty of singing, dancing and acrobatics. (Photo by Hannibal Hanschke/Reuters)

Opera singers perform in the pool “AquAria PALAOA” during a rehearsal at the swimming pool Neukoelln on April 27, 2011 in Berlin, Germany. The premiere of the underwater opera AquAria PALAOA is on May 1st. (Photo by Andreas Rentz/Getty Images)

Street fighting in Berlin between Government troops and Spartacists, during the Spartacist uprising which followed Germany's defeat in World War I. (Photo by Keystone/Getty Images). 1919