Hagia Sophia (Ayasofya): It was firstly built in 347 AC by Konstatinus and rebuilt by Empire Justinanus after its destruction by a fire. It has been turned into a mosque after Turks invaded the city. Now it is used as a museum.
 
Blue Mosque (Sultanahmet): This mosqued is placed in the southeast of Sulthan Ahmed Square

 
which was called Hippodrome before. It was built between the years 1609-1616 by Sultan Ahmed. Its
 
known as blue mosque because of blue painted 21.000 quartz tiles.
 
Topkapi Palace: It was built by Fatih Sultan Mehmet between 1465 and 1478. Its now used as a museum. Especially valuable stone and old Turkish gun collections are attractive.
 
Hippodrome: It was built in 2nd century has a capasity of 35.000 seats with its 400 meters lenght and
 
120 meters width. Here cartraces, circus shows and gladiator games were held in name of the king.
 
Grand Bazaar: It was first built by Fatih Sultan Mehmet in 1461-1481 in order to refresh the city
 
commerce. There are 10.000 shops and more than 50 types of occupation inside the bazaar which
 
was the centre of commerce of the city.

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