The Islamisches Zentrum Hamburg (Islamic Centre of Hamburg) is a purpose-built mosque on the Alster lake influenced by classical Islamic architecture. Islamic Center Hamburg is already known by most Muslims who live in Europe. The Center and ?mam Ali Mosque are open to everybody. The management of I.C. Hamburg and ?mam Ali Mosque are the same. While I.C. Hamburg shows activity throughout Europe, ?mam Ali Mosque is active locally.