Palacio de Montemuzo, Renaissance palace in central Zaragoza, Spain

The Palacio de Montemuzo is a late-16th-century Renaissance palace on Calle Santiago, with a brick facade, a round-arched doorway, balconies on the main floor and a top gallery of double round arches under a deep eave. Inside, a central courtyard with a staircase organises three floors. A ground-floor passage links it to the early-20th-century Casa Artiach, now home to the Municipal Archive.

The palace was built in the late 16th century in the Aragonese Renaissance style and belonged to the Marquises of Montemuzo. In 1985 it passed to the Zaragoza city council, which converted it into the seat of the Municipal Archive. A ground-floor passage now links it to the early-20th-century Casa Artiach, an eclecticist apartment building with modernist decoration.

The palace keeps the layout of Aragonese Renaissance palaces: a rectangular plan, three floors and a central courtyard with the staircase to the upper levels. Since 1985 it has housed Zaragoza's Municipal Archive, and a ground-floor passage links it to the eclecticist Casa Artiach, built in the early 20th century with modernist decoration.

The building houses public archives, a library, and a newspaper library that are open regularly. Visitors should know the spaces are accessible and no admission is charged for using these facilities.

Part of the plot of the novel "El Círculo Hermético" by Fernando Lalana and José María Almárcegui takes place in the palace. The building passed from the Marquises of Montemuzo to the Zaragoza city council in 1985, which turned it into the municipal archive.