The Sultanahmet Mosque is known with the name Blue Mosque because of its İznik Tiles fame beyond its name, was built with the request of Sultan Ahmet 1 by architect Sedefkâr Mehmed Ağa in the 17th century.
It is the last greater masterpiece of the classical period that the architecture Sedefkâr Mehmed Ağa reflects the ideas of greatness, majesty, and grandeur on his art, decorating it more than 50 different tulips figured 20.000 İznik tiles.
During its period the chandeliers were covered by gold, and with precious stones that were plundered in time, and ostrich eggs were put into crystal bowls to block the spider web on the ceiling.
One of the greatest calligraphers of all times Seyid Kasım Gubari beautifies the mosque by decorating it with quotes from the Quran. The fascinating Mihrap (the altar that shows the direction of the Kaaba and is reserved for the imam inside the mosque) is made of finely carved and chipped marble that is worth being seen.
In 1985 the mosque and other buildings around the old city have been added to the Unesco World Heritage List under the name Zones historiques d'Istanbul.