Barcelona is home to one of the famous architects known to human kind; Gaudí.
This man was so ahead of his time that no one understood him. La Pedrera is one of the projects he has built and entering through his creation, you cannot help but be in wonderment.
His taste is not something that is suited to all, however, whether you like his design or not, one thing you will admit to is his attention to detail. Something that has been wiped away by mass production in my opinion. Book a tour and be amazed as there exists no design like his!