Source: Enjoy Your Holiday, http://cdn.enjoyourholiday.com/wp-content/uploads/2011/10/Park-Guell-Barcelona-the-most-beautiful-park-in-the-world-img21.jpg
One of the most popular and bizarre works by Gaudí, the iconic Parc Güell and the Mind House are a testament to Gaudí’s genius. The park was originally built as a housing complex but failed. While it failed as a housing site, it did succeed as an architectural marvel, replete with a rocky hill with little vegetation called Bare Mountain, a serpent bench, Gaudí-designed furniture, fountains and mosaics. One of the most magnificent features of the park is the Mind House, which features three floors and an attic with a studded and painted roof.
Source: Dann Mihalake, http://dannmihalake.files.wordpress.com/2009/07/casa-batllo-antonio-gaudi-vista-general.jpg
Built in 1877 and restored from 1904 to 1906 by architect extraordinaire Gaudí (alongside Josep Maria Jujol) the building is located in Barcelona and was intended to be an abode for a middle class family. The peculiar design is completely devoid of straight lines, instead boasting sculpted stone, oval windows, and arched roof and is decorated with a broken glass mosaic.
Source: Barcelona Holiday Apartments, http://www.barcelonaholidayapartments.co.uk/wp-content/uploads/2011/05/Casa-Batllo-outdoor.jpg