Al Akbar Surabaya National Mosque, Muslim men praying together at Friday prayer, Surabaya, Java, Indonesia

prayer mosque islam surabaya indonesia friday communal worship faith spirituality men devotion unity worshippers religion togetherness culture gathering serenity architecture community peaceful islamic practice spiritual mats routine faithfulness ceremonies tradition holy sacred background lines downward bowing followers rituals collective tranquility cultural religious local crowds solemnity groups active participation space adult