Sagrada Familia is the famous, as-yet-unfinished church designed by Gaudi. We splurged and did the audio tour and rode the elevator up one of the towers. It was pretty spectacular and, yes, a bit gaudy (no relation). Gaudi's idea was to use the structures of nature to create an organic building. The result is quite different from anything else we've seen. Although not too sure at the beginning, by the end of the tour we liked it.