 The presence of the shrine of Saint Erkenwald made the cathedral a pilgrimage site during the Medieval period. In addition to serving as the seat of the Diocese of London, the building developed a reputation as a hub of the City of London, with the nave aisle, "Paul's walk", known as a centre for business and the London grapevine. After the Reformation, the open-air pulpit in the churchyard, St Paul's Cross, became the stage for radical evangelical preaching and Protestant bookselling.
