Alfonso II is said to have built four churches, one dedicated to Christ the Saviour, the Blessed Virgin Mary, St. Tyrsus, and SS Julian and Basilissa. There are few traces of the churches dedicated to the Saviour, the Virgin Mary, and St. Tyrsus. The San Salvador church, which was dedicated to the Saviour, is likely beneath the Cathedral of Oviedo. The church of Santa Maria de la Corte, which was dedicated to the Virgin Mary, was demolished in 1702. As for St. Tyrsus, the church dedicated to him exists today as the church of San Tirso. Only a wall and a three light window are believed to have been built by Alfonso II, the majority of the rest of the church is dated to the 14th century. The best preserved church constructed during Alfonso II's time was San Julian de los Prados.