In 1960, the North Atlantic Treaty Organization (NATO) and the Canadian Department of National Defense (DND) built a satellite communications station (SATCOM) at this location. It supports a 20.7-metre (68-foot) diameter metal space frame radar dome (radome) on its roof, which provides environmental protection for the 15.2-metre (50-foot) diameter SATCOM antenna that it houses. The antenna provided satellite communications between all NATO countries until 1999 when NATO and the DND decommissioned the site. That same year, it was purchased by Canadian Space Services Ltd. to serve as its corporate headquarters and training ground for employees. Today, it is owned by the CSS Building, which rents interior space to various local businesses. The two-hectare (five-acre) property currently has four domes on it that vary in size from three metres (10 feet) in diameter to 20.7 metres (68 feet) in diameter. A guided tour inside the building allows visitors to see inside the antenna to view a section of wave guide and the servo motors. Tours around the grounds and inside the building are available by appointment only. For Digital Doors Open, however, anyone can take a virtual tour through the video below.