Clarke & Clarke Secret Garden Attingham Cobalt/Green Wallpaper. Attingham feels bold, taking its inspiration from simple Art Deco shapes. Named after Attingham Park, an 18th century estate with a Regency Mansion. The mid-size proportions of the design repeat feel intricate and yet impactful. This wallpaper features a surflex technique for a chalky, block-printed look adding to the handcrafted quality. It is said that the estate from which the design is named was 'for all seasons', which it certainly is.