Eight-year-old Jack and his younger sister Annie find a magic treehouse, which whisks them back to an ancient time where they see live dinosaurs.

Henry is excited when his Uncle Jake builds him a tree house but worries that his dog Mudge will not be able to enjoy it with him.

Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world! This treehouse has thirteen stories, a bowling alley, a see-through swimming pool, a secret underground laboratory, and a marshmallow machine that follows them around and automatically shoots marshmallows into their mouths whenever they are hungry. Life would be perfect for Andy and Terry if it wasn't for the fact that they have to...

When his dad builds him a tree fort, Russell thinks it's perfect--right up until he notices another tree fort going up three houses over.

In this story for beginning readers, Boy, Bird, and Dog have lots of fun in their tree house.

Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.

"With ladders, swings, turrets, and elaborate pulley systems everywhere--animals chase one another over, under, around, and through the tree house that Jack has built. Then the bell rings, and all the animals gather for story time with Jack"--

Froggy and his friends build a treehouse, while avoiding help from his little sister, Frogilina.

Andy and Terry live in a 26-storey treehouse. It has a bumper car rink, a skate ramp, an antigravity chamber, an ice cream parlor with 78 flavors, and the Maze of Doom. This time, the two friends have a whole week to finish their next book, and Andy even knows what it should be about; the story of how he and Terry first met. But, life is never boring in the treehouse, and emergency shark operations, giant storms, and wooden pirate heads are just the...