The Batllo House is another work by talented designer Gaudi, known for its bizarre designs, and has been listed as a UNESCO World Heritage Site in 2005. Entering the Batllo House, curves, waves, stained glass, mosaic splicing and other elements that Gaudi is best at fully reflecting his Art Nouveau naturalist style. The stained glass in the hall on the second floor, the sun shines in, is particularly interesting. Up the stairs, the blue mosaic walls, through the glass railings, create the fantasy of the ocean. The chimneys on the roof are also created to look strange. The roof ridge also incorporates the scale elements of Barcelona. The designer's brain is big!