The modern popularity of the symbol largely dates to 1911, when the Liver Building was built. This prominent display of two liver birds rekindled the idea that the liver was a mythical bird that once haunted the local shoreline. According to popular legend, they are a male and female pair: the female looking out to sea, watching for the seamen to return safely home, and the male looking in to the city, watching over the seamen's families (or "making sure the pubs are open", as a jocular version has it). Local legend also holds that the birds face away from each other, for if they were to mate and fly away, the city would cease to exist. In fact, they were indeed designed to watch the city (our people) and the sea (our prosperity).