Gaudi's architecture is the blood of Barcelona. Every Catalan, given his choice of genes and attitude, would approach his or her craft with the distinction and lifelong energy Gaudi threw into his buildings. And unlike Gehry or Kahn or Philip Johnson or I.M. Pei, Gaudi micromanaged his works to the chairs and tables contained therein. His constructs are still living and transforming, completely useful places, inhabited. Not galleries or shells around pedestrian office spaces. Inside Gaudi, you might as well be inside the intestines of an alien life form, shaped by fantasy and sculpted by instinct. The pictures in this gallery are of a single work of Gaudi's, his building called "Batllo." Pronounced bhat-yo.A single building in Barcelona.