The largest missionary group in Havana was the Society of Jesus. After extensive petitioning and the purchase of a piece of land in the Plaza by Diego Evelino Hurtado de Compostela, Bishop of Santiago de Cuba, a permit was granted. The cathedral is set in the former Plaza de La Ciénaga. In 1727 plans to build a church, convent and collegium were approved and the project began to take form. The plaza is located on the site of a swamp that was drained and used as a naval dockyard before the cathedral was built.