Ottomans capture Bursa from Byzantium

April 1326

After a six-year blockade Osman's son Orhan finally took the prosperous city below Mount Olympus and made it the first proper Ottoman capital. Bursa's silk markets bankrolled further conquests; its green-tiled tombs would receive every early Ottoman sultan. The Byzantine line in Bithynia had effectively ceased to exist, and Anatolia was lost to Constantinople forever.