I was looking through Dwell's "Ideas" page online when this beautiful gothic church/bookstore caught my eye. The bookstore sits inside a gothic cathedral in Barcelona and was recently remodeled by Spanish architect Pilar Libano. La Formiga D'Or, as its called, manages to "seamlessly blend modern design with a Gothic cathedral." They kept the feeling in the bookstore consistent with the church by using oiled old-growth wood and wrought iron for the furniture and accents. But my favorite part: the collection of rosaries on the wall!