The Royal Monastery of La Santísima Trinidad in Valencia is an old monastery site that is still being used for its original purpose today. It was founded by Queen María of Castile, the wife of King Alfonso V "El Magnánimo" (The Magnanimous).
During the second half of the 15th century and the early 16th century the monastery was in its heyday, becoming a cultural and spiritual centre and a major reference point for the city of Valencia. At that time, between 1463 and 1490, the Abbess was writer and humanist Isabel de Villena.
In the early 17th century, María de Corella, Countess of La Puebla, added to its wealth by donating valuable works of art and holy relics for the Lower Choir of the monastery. Between 1695 and 1700, the monastery church was redecorated in the Baroque style by Felipe Serrano.
It was declared a National Monument on 22 December 1982 and the monastery was listed as an Asset of Cultural Interest on 4 February 1983.
Queen María of Castile is buried here, making the monastery the only royal burial place in the Region of Valencia.