<P> Also called the Picture Gallery, and formerly known as the supper room, this is the oldest room in the castle and largely retains its original decoration, having escaped major modification and fire over the years . It dates from Lord Chesterfield's building of the state apartments in the 1740s, and was intended for use as a supper room adjoining St. Patrick's Hall and as a personal dining room . Today the room is still used for dining when conferences take place in St. Patrick's Hall . </P> <Dl> <Dt> State bedrooms </Dt> </Dl> <P> These former private quarters of the Lord Lieutenant were built as five interconnecting rooms running along the back of the building, adjoining the spine corridor that separates them from the state drawing room . Completely rebuilt in the 1960s following fire in 1941, the rooms maintain the original courtly sequence and today are used as ancillary drawing and meeting rooms to the principal apartments . The last dignitary to stay in the royal bedrooms was Margaret Thatcher, who spent a night there with her husband Dennis during one of the European Council meetings held in the 1980s . </P> <Dl> <Dt> State corridor </Dt> </Dl>

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