I traveled to Barcelona over springbreak and saw some amazing architectures. The ones by Gaudi especially stood out to me (the ones above are just a few of the many designed by him that I saw). I love how he defied the linearity of most buildings and incorporated so many curves into his architectures. To me, those curves give the buildings an exotic and magical feeling. Here is a link where you can learn more about Gaudi and his amazing works: http://whc.unesco.org/en/list/320 .