Grand Bazaar
The Grand Bazaar (Turkish: Kapalıçarşı) is a large market in Constantinople (former İstanbul). The name means "Covered Bazaar" and is one of the largest covered markets in the world with 250,000 and a half million visiters daily. Ezio can go through The Grand Bazaar, jump across the beams on the ceiling or the good old climb across the roof method. The Grand Bazaar is seen in the E3 Demo when Ezio walks through the market to get to the Great Chain. The Grand Bazaar opened to the public in 1461 and became very popular for food, spices, pottery, fabric and many other items. It resembles closely to a market in Damascus in the first Assassin's Creed game whch Altaïr could travel through.
No doubt that while you play Assassin's Creed Revelations you will get a Database file on The Grand Bazaar.