A
ballroom is a large
room inside a
building, the designated purpose of which is holding large formal parties called
balls. Traditionally, most balls were held in private residences; many
mansions contain one or more ballrooms. In other large houses, a large room such as the main
drawing room,
long gallery, or hall may double as a ballroom, but a good ballroom should have the right type of
flooring, such as
hardwood flooring or stone flooring (usually marble).