St Martin's Church in Canterbury, United Kingdom, is recognized as the oldest church in continuous use in the English-speaking world. Established during the Roman occupation of Britain, it was originally used for pagan worship before becoming a Christian church in the 6th century. St Martin's Church is intimately linked to St Augustine, who arrived in Kent in 597 to convert the region to Christianity. The church is named after St Martin of Tours, reflecting its early foundation and dedication. Architecturally, it blends Roman brickwork with medieval alterations, reflecting its long history of religious service. Today, it is part of the Canterbury World Heritage Site along with Canterbury Cathedral and the Abbey of St Augustine. As an active parish church, St Martin's continues to hold regular services and remains a spiritual and historical beacon, drawing visitors interested in early Christian history and religious heritage. The church's interior features remnants of ancient frescoes and a serene atmosphere conducive to contemplation and prayer.