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 City F.C. in the same season; something which was not matched until Birmingham City also suffered relegation the season they won the League Cup 26 years later. Norwich were also denied their first foray into Europe with the ban on English clubs after the Heysel Stadium disaster. City bounced back to the top flight by winning the Second Division championship in the 1985–86 season. This was the start of what remains in 2017 a club-record nine consecutive seasons in the top division of English football. High league placings in the First Division in 1986–87 and 1988–89 would have been enough for UEFA