Above: Two views of The Selexyz Bookstore in Maastricht, Holland which is in an old Dominican church. The coffee shop (in the second image, seen from above) located on the altar features a little visual pun: a communal dining table in the shape of a cross!
Above: The entrance to the Lello Bookstore in Porto, Portugal. One would think it is also a converted church, but it was designed and built in 1906 to be a bookstore. Designed in a Neo-Gothic style, it features a beautiful, double floating staircase seen in the following three images below.