Bosscha Observatorium Bandung (lembang) built in 1923 by Nederlandsch-Indische Sterrekundige Vereeniging (Assoc. of Dutch-Indies Astronomers) is the only observatorium in Indonesia. It lies in Lembang, a small suburb city in the northern part of Bandung. It is now part of the Dept. of Astronomy, Institute Technology Bandung.Bosscha Location: Jl. Peneropongan Bintang, Lembang Bandung 40391. Tel: (+62) 22-2786001. E-mail: administration[at]as.itb.ac.idTo visit there, ask the department administration first for a reservation. Some visiting notes: Reservation must be made 1 month before. Bosscha is closed on national holidays, Sunday and Monday. Day visit at 9:00, 12:00 (except Friday at 13:00) and 15:00. Public night (17:00-19:30), between April-October, with some presentations and demos. Ask there for a specific date as this public night is open at the 7th and 8th of the lunar month. Special visit can be arranged, subject to their availability.