The world's oldest extant mosaic floor was discovered during the excavations carried out in 1956-7 in the building called Megaron II in the city of Gordion . It dates back to the 9th century BC. This was probably the site of Phrygian mother goddess Matar temple.
See:
- Thompson, Elizabeth T.. “Documentation and Evaluation oIf the Conditions of the 9th Century B.C.E. Mosaic, from Gordion, Turkey and Recommendations for its Conservation and Treatment.” 201).
- Wohlgemuth, Kevin Adam. “Revisiting Gordion’s Pebble Mosaic Pavement: Evaluating Re-Backing Techniques and Investigating Alkali-Silica Reaction.” 2014.
- https://www.penn.museum/sites/gordion/history/iron-age-gordion/