The Palace of the Hurtado de Mendoza Family Monument · El Royo, El Valle y La Vega Cintora, Soria Image of El Royo, not of the place itself. When they abandoned the castle as a residence, the Hurtado de Mendoza reused its ashlars to raise at Hinojosa de la Sierra a Renaissance palace with a colonnaded gallery, declared a Monumento Nacional (Spain's heritage designation in force until 1931). Photo: LBM1948 (CC BY-SA 4.0) What to see and do in El Royo