 These pieces are now in the Musée Guimet in Paris.At the beginning of the 20th century, art historians realised that a full-fledged style was developed at Koh Ker.Georges Coedès concluded from inscriptions that Koh Ker was capital of the Khmer empire (928 – 944 AD) under the reign of Jayavarman IV and his follower Harshavarman II.