in the countryside and on the main road and rail routes into it. Although ribbon development has turned some into low-density suburbs, many retain their centuries-old parish churches. For example, East and West Horsley and East and West Clandon form "a suburban chain from Guildford to Leatherhead", but the Clandons have well-preserved Norman and 13th-century churches, and the Horsleys' churches have a Saxon tower and 11th- and 12th-century fabric respectively. Southeast of here, but more isolated and very popular with tourists, the cluster of villages around the River Tillingbourne at the west end of the Vale of Holmesdale supports a range of Anglican churches. The landmark St Martha's Church, a ruined 12th-century church rebuilt in 1848, stands on St Martha's Hill north of Chilworth. St James's Church at Shere, "second to none in Surrey for beauty and antiquarian interest", is principally 11th- and 12th-century, and Albury's original parish church in Albury Park may predate the Norman conquest of England. The centre of population moved, though, and a new church was built in 1842. Holmbury St Mary and Peaslake both have 19th-century churches as well: formerly chapels of ease to Shere, the architecturally impressive buildings date from 1879 and 1889 respectively. Nearby, a 19th-century barn in the even more isolated hamlet of Farley Green was converted into a church after being presented to the parish of Albury. Elsewhere in the borough, medieval churches (restored to various degrees in the Victorian era) survive in the villages of Compton, Effingham, Ockham, Pirbright, Puttenham, Ripley, Seale, Send, Shalford, Wanborough, Wisley and Worplesdon. Ash and Tongham, now part of the Blackwater Valley conurbation, also retain their old parish churches. Roman Catholic worship was outlawed for many years until the end of the 18th century, although some owners of country estates covertly kept the faith. The Guildford Catholic Mission began in 1857 when the priest from St Edward's Church, Sutton Park began to celebrate Mass above a shop. In 1860 St Joseph's Church was built; it was replaced by a larger church on a different site in 1984. The west of Guildford is served by St Mary's Catholic Church, which dates from 1964 but whose origins lie in a Mass centre opened at Rydes Hill Preparatory School, a Catholic private school. The suburbs of Burpham and Merrow gained Catholic churches of their own in 1960 and 1973 respectively, although Burpham's closed in 2003 and St Pius