Christchurch Mansion is a substantial Tudor brick mansion house built in Ipswich, Suffolk by Edmund Withypoll around 1548–50. The Grade I listed building is located within Christchurch Park and sits by the southern gates close to the town centre of Ipswich. The mansion belonged to various noble families throughout its history but was purchased by the Ipswich Borough Council in 1884. Since 1885, the building has been used as a museum and is today run by the municipally run Colchester and Ipswich Museums Service (CIMS)organisation. The museum's rooms are preserved as past inhabitants would have known them, complete with original items such as furniture, fine clothing and children's toys. The museum also holds a collection of paintings by renowned local artists including John Constable and Thomas Gainsborough. The Mansion is free to enter and booking is not required.

Ipswich is a large port town and borough in the county of Suffolk, England. Ipswich is the county town of Suffolk and is the largest settlement in the county, followed by Lowestoft and Bury St Edmunds. It is situated in East Anglia. Ipswich is the second-largest population centre in East Anglia, Norwich being the largest. It is about 80 miles (130 km) northeast of London. In 2011 it had a population of 144,957. The Ipswich built-up area is the fourth-largest in the East of England region and the 42nd-largest in England and Wales. It includes the towns and villages of Kesgrave, Woodbridge, Bramford and Martlesham Heath.