The influence of the Christian missionaries is clearly observable in Bang Rak, not least from their churches—the Assumption Cathedral near the river is the seat of the Roman Catholic Archdiocese of Bangkok, while over a dozen Protestant churches are located in the district—but also through the schools and hospitals they founded. The Catholic Church operates Assumption College, Assumption Convent and Assumption Suksa schools, all near the cathedral, as well as Saint Joseph Convent School, situated off Si Lom on Convent Road, opposite the Carmelite Monastery. Also on Convent Road, on its corner with Sathon, is the historic Christ Church Bangkok, today a parish church of the Anglican Church in Thailand. The country's main Protestant denomination, the Church of Christ in Thailand, operates Bangkok Christian College, the country's oldest school, which sits on the corner of Sathon and Pramuan roads, as well as the Bangkok Christian Hospital on Si Lom. Other hospitals also have histories related to the Western presence: Lerdsin Hospital (on Si Lom Road, near Bang Rak Intersection) was first headed by Thomas Heyward Hays, a doctor with the Presbyterian mission, while BNH Hospital was founded as a nursing home by the British Community. The other hospital in the district is Mahaesak Hospital, and other secondary schools include the state-run Mahapruttaram Girls' School and Buddhajak Wittaya School.