HBO's "The Gilded Age" films scenes in real historic mansions from the time period.

Season 3 of "The Gilded Age" premieres Sunday, June 22, on HBO.

Unlike, say, Bridgerton, The Gilded Age is no fantastical retelling of history. It draws inspiration from real-life people and events. The Russell family is no exception. The past two seasons of HBO’s period drama have seen railroad tycoon George (Morgan Spector) and his ambitious wife,