The mosque is a building of worship for Muslims who generally have to accommodate many pilgrims. Islamic architecture has characteristics and particular ornaments that are often found in the mosque, which are: calligraphy, geometry and arabesque. While the Chinese architecture also has characteristics and peculiarities featuring ethnic ornaments, which are: geometry, figural shapes and colors. The development of Islamic adherents of ethnic Chinese in Indonesia, led to speculation whether the characteristics of Chinese architectural ornament is also applied in the mosques which they built in an attempt to melt prior belief. The research methods used in this research is qualitative methods and visual observation. Then do a comparative study, to look for the characteristics of ornament as a form of acculturation of Chinese culture that developed in Indonesia. Historically, several mosques in Java contain formations and ornaments of Hindu philosophy. The aim of the study indicate that synthesis between two cultures geometry ornaments enrich the mosque style in Indonesia.
Keywords: Mosque, Ornaments, Chinese, Geometry