The bay with 7 kms. length, has been a natural harbour of the city. It is as wide as 800 meters in places, with an average depth of 35meters. The rivers of Alibeykoy and Kagithane adjourns into the Goldenhorn.
This is the largest covered market in Istanbul. In addition to its historical importance, it's a bazaar that will tempt even the nonshoppers with its rich collection of precious handmade carpets, jewelery, leather and souvenirs.
The mosque of Sultan Suleyman The Magnificent, was built in the 16 th century by 'Sinan' the famous architect of all times.
Located opposite of Hagia Sophia, it is the last cistern constructed by Byzantine Emperor Justinianus the first in the 6th century.The cistern having dimensions 70x140m.and with a depth of 8 m.covers 28x12 that is 336 colums totally, each of them having a Corinth style capital.
One of the biggest mosques of Istanbul from 17th century architecture and is one of the principal adornments on the skyline of Istanbul. Also famous for its blue tiles and 6 minarets.
Cathedral and the best-known Christian Church In Istanbul. One of the finest and largest architectural works of art in the world.It has been to be the 8th wonder of the world by many historians. 
The former imperial residence from where the great Ottoman Empire was ruled. Today a spectacular museum that has one of the largest collections of Chinese and Japanese porcelain and very famous treasury of the Royal Family. 
This is thought to have been built by the Emperor Anastasius I ( 491-518 A.D ), although there is probably stronger evidence to suggest that it may have been the work of the Gnoese to defend them against repeated Byzantine attacks. The Byzantine side of the city was over the Golden Horn in old Istanbul, between the Horn and The Marmara sea. 
