Prambanan was a complex of over 240 Hindu temples with a center complex of 6 larger temples. It was built in the 8th and 9th centuries A.D.  The 2006 earthquake made the restored temples unsafe for tourists to enter so all we could do is walk around the outside. Unlike Borobudur, each temple is a individual structure and is easier to get absorb than the huge single temple. The carving techniques seem to be identical – the craftmanship is outstanding. It must have been built by a very prosperous nation.