Just 3km outside of town, this Catholic-run NGO is in a working coconut plantation and has an excellent cultural museum. It was developed by Fr Robert Ramone, who noticed how, once they are baptised, Sumbanese frequently break clean from their old culture and develop negative associations with the marapu and other totems. In addition to displays of old photographs, money and pottery, there is an ongoing project showing how tombs are carved. The website is a brilliant cultural resource.
The complex also has five basic rooms for rent (300,000Rp to 600,000Rp). Sit on one of the private porches and let the quiet envelop you.