In addition, the fact that there was a second final congregation place outside and an expanded width brought us face to face with a rather different mosque. Sinan followed this up by building an incredible complex and mosque for Sultan S leyman the Magnificent, construction of which was started in 1550 and completed in 1557. It was with the S leymaniye that two half-domes were utilized in the construction of a mosque. Along with the courtyard with a big fountain, the mosque's interior and outer appearance were considered to a unified entity. The grand dome, which is supported in the middle by four heavy columns, is also supported on both the entrance side and the southern direction with half-domes.
Minarets are in the courtyard's four corners.
In 1555, Sinan the Architect built a mosque for Kaptani Derya Sinan Pasha in Besiktas. With rows constructed of cut stone and brick, he had experimented with a different wall bonding. The domes over the courtyard portico and the final congregation room were built lower than normal giving this mosque, which had a single minaret, a more definite appearance. Sinan incorporated an eight-legged system, of which four were built into the walls and four were left standing independently. He also decorated it with the period's Iznik porcelain tiles.