Bearland House in Longsmith Street is an impressive 18th century building with an ornamental façade, forecourt, and fine wrought iron railings and gates.
The interior boasts a carved wooden staircase and decorated ceilings.
It was purchased by a high county Sheriff in 1764.
The ghost of his daughter is said to appear at the staircase window.
Pre-booking required at Tourist Information Centre, 0n 01452 396572 or at www.gloucesterhistoryfestival.co.uk.