Home > news Sultan Mahmud Riayat Shah's Tomb Complex Becomes A National Cultural Conservation 01 April 2023, 16:38 Officials visited the Sultan Mahmud Riayat Syah Tomb Complex in Lingga Regency, Riau Islands Province (Kepri). (ANTARA/Ogen) Tag: kepulauan riau nusantara cagar budaya tanjungpinang