The main building on the Church compound in Japan was built in 1983 by architect Desmond Abbot. Initiated by Viatoris as a place of worship, it was also the first building on the compound. The building consists of an atrium, narthex, central nave with two adjacent naves, double aisles, a bema, transept and an exedra. It holds a number of relics kept by the Church of Nellius, such as the Golden Tablet.
Sermons are held once a week for members only.