By David Macaulay
A Caldecott Honor classic: David Macaulay makes up one medieval Welsh castle and its town, then shows the whole thing built from bare ground up, in cutaway drawings you can pore over for an hour.
Macaulay makes up one castle in Wales, built by an English lord in the years after the conquest, and then walks you through building it. He starts with a bare hillside and the master engineer's plans, then brings in the diggers, stonemasons, and carpenters, and raises the walls, towers, and gatehouse over years while a town grows in the castle's shadow. His fine-lined drawings cut the buildings open so you can see every floor, every stair, every trick of defense worked into the stone. The last pages show the castle doing the job it was made for: standing off an attack.
This is the deep end, and for the right child it's a joy. If your child loves knights but keeps asking how things are actually built, it answers the question under all the castle play: how did anyone put one of these up, and how does it keep attackers out? Macaulay doesn't talk down. He gives the real engineering, which fluent readers eat up, and the drawings pay you back for staring, since there's always one more detail you missed. It's dense, though. A child who wants a story with characters may find it dry. This is a book you explore more than read.