Thinking about the Royal Collections Gallery, ready to open to the public at Plaza de la Armería in Madrid, I remember what Ortega y Gasset said in Idea del teatro (1946) to give “significance or strong meaning to the word”: “the Theater is above all, no more and no less, a building. Paraphrasing Ortega, I would say that a museum is first and foremost a building. If it has nothing else to offer, it is an empty museum, but a museum in any case. And if it is in possession of a collection to present within it, the museum idea is consummated, and the fulfillment of the institution’s purpose, completed. Here we will discuss both things: building and collection…[+]