Older research at Trowulan has concentrated on monumental remains: temples, tombs, and a bathing place. Archaeological surveys and excavations have recently found the remains of industrial, commercial and religious activity, habitation areas, water supply systems and water canals all of which are evidence of dense population during the 14th to 15th centuries.[1][2] In October 2009 Ministry of Culture and Tourism of Indonesia submitted Trowulan as UNESCO World Heritage list.[3]