Marcilla (Basque: Martzilla) is a town and municipality located in the province and autonomous community of Navarre, northern Spain.
Marcilla castle was built by Pedro de Peralta y Ezpeleta, father of Pedro de Peralta y Ezpeleta, in the 15th century.
It was the seat of the marquises of Falces for some four centuries, who here kept Tizona , the reputed sword of El Cid (now in Museo de Burgos).
The castle was restored during 2009–2012.
This article about a location in Navarre, Spain, is a stub.