The document summarizes information about the Sultan Ahmed Mosque in Istanbul, Turkey. It provides background on its founder, Sultan Ahmed I, who decided to build the mosque after a war with Persia. Construction began in 1609 and was completed in 1616, though Sultan Ahmed I did not live to see its completion. The mosque has five large domes, eight secondary domes, and six pencil-shaped minarets. Its interior features blue paint and over 20,000 handmade tiles depicting tulip designs.