Koza Han (Silk Market) Kozahan is a remarkable two-storey building situated between Bursa Grand Mosque and Orhan Mosque. Constructed in 1491 by the renowned architect Abdul Ula Bin Pulat Sah, this building has significant historical and cultural value as a representative example of Ottoman heritage. In the past, Kozahan was a bustling marketplace for silk cocoons, which were used to produce high-quality fabrics worn by the affluent for centuries. This tradition, originating from Central Asia, spans nearly a millennium. The ground floor of Kozahan houses a magnificent sadirvan (fountain) and 95 rooms surrounding a central courtyard. While silk trade is no longer organized here, the market still offers a range of affordable, high-quality silk products such as fabrics, shawls, and dowry items. The architecture of Kozahan is typical of Ottoman style, featuring arched, covered passageways and a central courtyard. While the building has been recently renovated, it still retains its original charm and character. The establishment boasts a modern patio with century-old oak trees and comfortable seating arrangements, including low tables and sofas in niches opposite the shops. Although there are stores selling silk garments, scarves, and some table silver, Kozahan may not offer the same level of silk trade as it once did. Nonetheless, it remains a must-visit destination for those interested in Ottoman heritage, architecture, and the history of silk production in Turkey.