Kings And Castles Block Set. Young architects can construct castles, gothic chapels, fortresses and more with these heirloom-quality wooden blocks. Kings and Castles Block Set includes 68 blocks featuring detailed artwork of real-life castles of the Middle Ages. Set includes wooden storage boxes, plus hardcover books with illustrated building plans and educational information. For ages 3 and up. Size Largest blocks 4" x 1" WARNING CHOKING HAZARD (1) Not for under 3 yrs.