If you're neat the Passeig de Gracia vicinity, make sure you check out the Casa Vidua Marfa. Designed by architect Manuel Comas in 1901, finished in 1905, it's an awesome mix of Romanesque , Gothic, and Modernism. Currently it houses a communications school and a tourism agency so it doesn't cost anything to get in. Be careful if you're backing up to get a better view of the upper levels of the front and side facades, there's a lot of mixed bicycle-scooter-moped-car traffic on the street. read more