Antoni Gaudi is of course the most famous of these Barcelona architects, although by no means the only one. Largely because his architecture is so accessible, and just so weird, he has become extremely popular with everyday people. His reputation among architects is less secure, because his work is so different from the minimalist style of architecture that dominated the twentieth century. If you judge his work by architecture's most famous maxim, "form follows function", then clearly his work is a failure, as his wavy walls and riot of decoration have nothing to do with the function of the building. But they are certainly fun to look at and really liven up the city. If nothing else, they are a boon to Barcelona's tourism industry.