Zeugma Mosaic Museum, in the town of Gaziantep, Turkey, is the biggest mosaic museum in the world, containing 1700m of mosaics. It opened to the public on 9 September 2011. The museum's mosaics are focused on Zeugma, thought to have been founded by a general in Alexander the Great’s army. The treasures, including the mosaics, remained relatively unknown until 2000 when artifacts appeared in museums and when plans for new dams on the Euphrates meant that much of Zeugma would be forever flooded.