Wim Pauwels‎,‎ founder and managing director of Beta‎-Plus Publishing‎,‎ began putting out a series of books in 1997 about architecture and interior design‎.‎ So far his publishing company has brought out more than 250 titles dedicated to certain themes ‎(‎such as living rooms‎,‎ bathrooms‎,‎ kitchens‎,‎ children‎'‎s rooms‎,‎ antique building materials‎,‎ restoration‎,‎ renovation‎,‎ gardens and swimming pools‎)‎‎,‎ plus monographs of architects and interior designers‎,‎ manuals and yearbooks about timeless and contemporary architecture and interiors‎.‎ For each book he enlists the assistance of authoritative specialists to obtain introductory texts and photograph captions‎.‎