Royal House of the Labourer Monument · Aranjuez, Las Vegas, Madrid A pleasure pavilion built between 1794 and 1803 for Carlos IV with the involvement of Juan de Villanueva and Isidro González Velázquez; its Platinum Room combines mahogany with bronze and platinum inlay, and the interiors were designed by Jean-Démosthène Dugourc. Photo: Assdl (Wikimedia Commons) (CC BY-SA 3.0) What to see and do in Aranjuez