The document summarizes key elements of Islamic mosque architecture. It describes standard features like courtyards, fountains for ablutions, minarets to call prayers, and mihrabs indicating the direction of Mecca. It provides examples of early mosques that adapted Roman architectural styles, like Damascus' Great Mosque based on a basilica. The hypostyle plan with columns supporting the roof and four-iwan plan with central courtyards and vaulted entrances are described. Decorative elements like muqarnas stalactite patterns and tilework featuring calligraphy and patterns are also summarized.