Zeugma Mosaic Museum, in the town of Gaziantep, Turkey, is the biggest mosaic museum on the world, containing 1700m2 of mosaics.
The museum's mosaics are focused on Zeugma, thought to have been founded by a general in Alexander the Great’s army. Because of a dam in the Euphratesof Zeugma is flooded. Many mosaics were rescued and put on display in this museum1.
See also
http://www.muze.gov.tr/gaziantep-en