Palace of Duques de Pastrana, Noble palace in Madrid, Spain.

The Palace of Duques de Pastrana, also known as Palacio Gilhou, is a 19th-century palace on Calle de Platería in Madrid's Nueva España neighbourhood. Its rectangular main block, flanked by two projecting side wings and topped by four towers, has a columned porch and trapezoidal gardens.

The French financier Louis Guilhou Rives bought the land from the Duchess of Pastrana to build his residence in Chamartín de la Rosa; construction began in 1837. The palace was declared a Bien de Interés Cultural in 1979 and now belongs to the ONCE.

The palace is also known as palacio Gilhou, after Louis Guilhou Rives, the French financier who bought the land from the Duchess of Pastrana and began building it in 1837. Since its acquisition by the ONCE it has hosted events and ceremonies.

The palace is located in central Madrid and can be reached on foot from many nearby points of interest. Allow enough time to move through the different internal areas without rushing.

The palace was begun in 1837 for the French financier Louis Guilhou Rives, who bought the land from the Duchess of Pastrana and ran a bakery and a tannery on his Chamartín de la Rosa estate. It has belonged to the ONCE since the 20th century and is used for events.