Context : Alfonso d'Avalos Addressing his Troops (Spanish: Alocución del Marqués del Vasto) is a portrait of Alfonso d'Avalos by Titian, painted in around 1540 and now held at the Museo del Prado in Madrid. 
Answer : Museo del Prado
What is the name of the place where Alfonso d'Avalos Addressing his Troops can be found?