A United Nations World Heritage site, Phimai is the site of a walled complex of reconstructed temples, libraries and ancillary structures, one of the most important Khmer monuments in Thailand. Reconstruction of the temple site in Phimai serves as a case study highlighting the potential of computer visualization as a tool in heritage resource management.  Besides offering archaeologists, historians and museum curators a non-evasive environment for testing reconstruction scenarios, virtual worlds offer the public access to important historic monuments without the wear of excessive visitation.