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)

A competitor calls with a shell at the German championships in Deer-Calling at the “Jagd & Hund” (hunting & dog) exhibition in Dortmund February 6, 2015. Competitors use specially designed instruments or ox horns to imitate the mating call of red deers. About 750 exhibitors will present their latest developments at the 34th “Jagd & Hund” exhibition, which runs from February 3 to February 8. (Photo by Ina Fassbender/Reuters)

In this photo made Thursday, April 11, 2013, Soviet Jewish World War Two veteran Boris Ginsburg poses for a portrait at his house in the southern Israeli city of Ashdod. Ginsburg, born in Belorussia, was kept by a German garrison in the Lenin ghetto since 1941 until its destruction by partisan units in September 1942. In 1942 he joined the partisans for two years and in 1944 he joined the Red Army as a combat soldier and fought till the and of the war. Ginsubrg demobilized in 1947 and immigrated to Israel in 2001. About 500,000 Soviet Jews served in the Red Army during World War Two, and the majority of those still alive today live in Israel. (Photo by Oded Balilty/AP Photo)

West German police arrest a young man, one of the angry crowd throwing stones at a bus full of Soviet guards making their way to the Soviet War Memorial, 20th August 1962. The crowd were incensed by the death of 18-year-old Peter Fechter, who was shot while trying to cross the Berlin Wall a few days earlier. (Photo by Central Press/Hulton Archive/Getty Images)

A man dressed as Santa Claus poses during a base flying event in downtown in Berlin December 6, 2014. Participants of the event hosted by entertainment agency Jochen Schweizer flew down 98 metres (322 ft.) from atop the hotel in the German capital. (Photo by Hannibal Hanschke/Reuters)

Buddy Bears are a series of painted, life-size fibreglass bear sculptures originally developed in Berlin, Germany. The first Buddy Bear was created by the German businesspeople Klaus and Eva Herlitz, in cooperation with the sculptor Roman Strobl in 2001.