A state room in a large European mansion is usually one of a suite of very grand rooms which were designed for use when entertaining royalty. The term was most widely used in the 17th and 18th centuries. They were the most lavishly decorated in the house and contained the finest works of art. State rooms were usually only found in the houses of the upper echelons of the aristocracy, those who were likely to entertain a head of state. They were generally to accommodate and entertain distinguished guests, especially a monarch and/or a royal consort, or other high-ranking aristocrats and state officials, hence the name. In their original form a set of state rooms made up a state apartment, which always included a bedroom.