Islam is a monotheistic religion since it only worships one God, which is Allah. Muslims worship usually by praying and worshiping Allah, this can be done inside or outside of the Mosque but you always have to be facing in the direction of Mecca. When Muslims go to the Mosque they usually go there and pray on their own unlike other Churches. Also, Muslims are suppose to worship by following the five pillars of faith , which are: faith in Muhammad, having daily prayers, donating to the poor, fasting, and the pilgrimage to Mecca. The Sacred Text of Islam is the Quran, the Quran was conveyed entirely by Muhammad. There are some smaller Sacred Text to Islam, as in, The Sunna, and the Hadith. The architecture of some building of the Islam religion tend to have Domes, Arches, Columns, and large open courts.