The Church of Los Juanes del Mercado, short Santos Juanes (Saint John) or Valencian Sant Joan del Mercat, is a Roman Catholic church near the center of Valencia in the market district and opposite the Llotja de la Seda. It is also called Real Parroquia de los Santos Juanes (Royal Parish of Saint John). It is a Monumento Histórico Artístico Nacional.
In the mid-13th century a church was built on the site of a former mosque, initially in the Gothic style. But a fire interrupted the construction. Another major fire in 1592 forced a new building in the Baroque style, which was financed by the Archbishop and Viceroy Juan de Ribera. It was not completed until 1700. All around was the Boatella district, where the workers lived outside the city walls, including the Moriscos.
The main facade contains a bricked-up rose window from the older church, which is also called “O of John”. A niche in the square rear building of the apse facing the Silk Exchange Square contains a group of stucco Virgen del Rosario statues by Jacopo Bertesi. The baby Jesus holds his hand on the globe. At the top there is a clock tower, and a roofline supports the statues of the two Johns: the Baptist, the Evangelist, and then Saints Francesco Borgia and Luis Bertrán.
Inside, statues depicted the Twelve Tribes of Israel and frescoes by Antonio Palomino depicted the triumphant church. It was partially destroyed in the Spanish Civil War.