Each page of the Archidoodle activity book contains an incomplete architecture-related drawing, which the reader-turned-artist has to finish off themselves. The user can either be as accurate as possible or as imaginative as they like with the designs.
Famous structures including the Eiffel Tower, the Taj Mahal and a selection of the world's tallest buildings all feature in the volume.
The publishers are giving away a copy of Archidoodle, plus 100 Years of Architectural Drawing and any other Laurence King title of the winners' choice to five successful sketchers.
Readers can chose between creating a new top for the Sydney Opera House, redesigning the facade of London's Buckingham Palace or coming up with their own version of The Farnsworth House by Mies van der Rohe.
This competition has now closed, but you can still download one of the three PDF pages below: