A good supplement to your existing collection of LEGO bricks. Adds more play value to all LEGO sets. By adding the blue color, we have "sea" to go with "grass" and the roadway is grey. Features: Includes 4 large building plates - 2 green, 1 blue and 1 grey. Sizes of the plates: the green and blue plates are 32 x 32 studs (25 x 25 cm) the grey plate is 48 x 48 studs ( 38 x 38 cm). 4 piece set.