The Huntington Bank Building (originally the Union Trust Building) is a high-rise office building on Euclid Avenue in downtown Cleveland, Ohio's Nine-Twelve District. When the building was completed in 1924, it was the second largest building in the world in terms of floor space, with more than 30 acres (12 hectares) of floor space. It also included the world's largest bank lobby, which today remains among the largest in the world.