Islamic architecture encompasses a wide range of both secular and religious styles from the foundation of Islam to the present day. What today is known as Islamic architecture owes its origin to similar structures already existing in Roman, Byzantine and Persian lands which the Muslims conquered in the 7th and 8th centuries. The principal Islamic architectural types are: the Mosque, the Tomb, the Palace and the Fort. From these four types, the vocabulary of Islamic architecture is derived and used for buildings of less importance such as public baths, fountains and domestic architecture.
Many forms of Islamic architecture have evolved in different regions of the Islamic world. Notable Islamic architectural types include the early Abbasid buildings, T-Type mosques, and the central-dome mosques of Anatolia. The oil-wealth of the 20th century drove a great deal of mosque construction using designs from leading modern architects.