The medieval quarter of the craftsmen's, merchants' and shippers' guilds has not stopped at simply possessing gems of Catalan Gothic art. It has become one of the trendiest places in Barcelona, where art galleries and chic designer boutiques are scattered about the narrow streets lined with bohemian bars. Those interested in street art might want to follow in the footsteps of certain talented graffiti artists who have left their mark on walls and doors of the area.