Blue Mosque, is the largest and most impressive mosque in Istanbul. Mosque construction started in by architect Mehmet Agha, a disciple of the architect Sinan and was completed seven years later (1616). Sultan Ahmet Mosque is the last and most impressive structure of Ottoman Empire. However, after it had been built several mosques but none has reached the proportions and its splendor. It was built on an ancient hippodrome called Atmeydani, located in downtown since the Byzantine period. During the training room for the huge mosque, many buildings were demolished old Byzantine and value. We worked very carefully to interior decoration and the 21,043 pieces of granite colors have been specially commissioned by Sultan Ahmet in a workshop of the famous Iznik. Carpets were also huge and lamps and chandeliers specially ordered were imported. Mocheea Blue Mosque in Turkey alone has six minarets structure, which makes it unmatched among other Ottoman mosques. Minarets, situated at the corners of the mosque were also in their structure balconies are decorated with 16 blue granite. Court mosque covers an area of 500 square meters, down the marble placed superior. In its courtyard is also a beautiful fountain decorated with 6 columns and 6 granite towers an impressive architecture. Sultan Ahmet Mosque is known worldwide as the Blue Mosque because sometimes blue and green lines on the entire building interior but also because it is predominantly blue. The windows in the number of 260 are also decorated and colored in predminata color - especially blue and were brought from Venice. At the entrance and inside the mosque are the golden granite slabs engraved with verses from the Koran and important sermons of the Prophet Mohammed. Entry into a mosque is barefoot and shoes let some banks entry especially built for it.