Detail from "Receiver to Remote control... channeling Spain 2010."(Courtesy Lisbeth Salas)

A recent trip to Barcelona for the World Architecture Festival (WAF) made clear to me just how well the nations of the European Union do at updating their historic centers. American tourists, of course, go to places like Spain to see medieval or Renaissance urbanism not contemporary cities. And that’s a shame because we could learn a great deal about how to build today and add intelligently to our own 19th and 20th century cities.

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