In addition to the innumerable backyard mosques, there are also a number of larger buildings in with space for more than 1,000 or more worshipers in German cities such as Duisburg, Mannheim, Cologne ...

Muslims pray during Friday prayers at the Turkish Kuba Camii mosque located near a hotel housing refugees in Cologne's district of Kalk, Germany, October 14, 2016. Picture taken October 14 ...