With a few exceptions, the prime minister's spouse has been a public figure and the subject of media interest. Most have used the position to promote charitable causes. By convention, the spouse of the prime minister serves as the host or hostess of The Lodge and Kirribilli House, the official residences of the prime minister. He or she also assists the prime minister in welcoming foreign dignitaries to Parliament House and various other locations during ceremonial events. However, the position is unpaid and there are no official responsibilities.