Norwich also records the site of an Anglo-Saxon church in Tombland, the site of the Saxon market place and the later Norman cathedral. Norwich continued to be a major centre for trade, the River Wensum being a convenient export route to the River Yare and Great Yarmouth, which served as the port for Norwich. Quern stones and other artefacts from Scandinavia and the Rhineland have been found during excavations in Norwich city centre. These date from the 11th century onwards. Norwich Castle was founded soon after the Norman Conquest. The Domesday Book records that 98 Saxon homes were demolished to make
Norwich and other charges, and inadequate rainwater handling, which has been unpopular with many stallholders and customers alike. In 2007 the local "Norwich Evening News" characterised Norwich Market as an ongoing conflict between the market traders and Norwich City Council, which operates the market. The Castle Mall, a shopping centre designed by the local practice Lambert, Scott & Innes and opened in 1993, presents an ingenious solution to the problem of accommodating new retail space in a historic city-centre environment — the building is largely concealed underground and built into the side of a hill, with a public park created on