Their magic tree house takes Jack and Annie back to a monastery in medieval Ireland, where they try to retrieve a lost book while being menaced by Viking raiders.

Children and their robot friend build a treehouse in a rhyme that fits the tune of "London Bridge is Falling Down." Includes facts about simple machines, jobs robots do, an activity, and musical notation.

Fifth-grader Winnie, with notes from her friends, writes of turning her treehouse into an embassy after her newly-divorced parents become unreasonable, where she is joined by nine others with complaints.

Eight-year-old Jack and his younger sister Annie use the magic treehouse to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight.

Pete invites his friends over, but when he finds that his tree house is not big enough for everyone, they work together to build a fun place that can house everyone.

The magic tree house takes Jack and Annie to Nepal with a mission to find. . . a ghost! As frightening as that sounds, the mission is clear: find the ghost and save the world. But what does all this have to do with a mountain, an old man, and a snow leopard? The journey is dangerous and the path uncertain, but Jack and Annie can do this -- they're the only ones who can!

Eight-year-old Jack and his younger sister Annie find a magic treehouse, which whisks them back to an ancient time zone where they see live dinosaurs. Jack y Annie descubren una misteriosa casa en la copa de un arbol. Esta llena de libros que los llevararan a lugares extraordinarios, pero tambien peligrosos. en esta ocacion viajaran a la Prehistoria y se encuentran frente a unos terribles dinosaurios.

Andy and Terry's incredible, ever-expanding treehouse has 13 new stories, including a watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes!), a rocket-powered carrot-launcher, a Ninja Snail Training Academy and a high-tech detective agency with all the latest high-tech detective technology, which is lucky because they have a BIG mystery to solve - where is Mr Big Nose??? Well, what are you...

When Jack and Annie travel back to the Kansas prairie in search of "something to learn," they gain an understanding of how hard life was for pioneers and they experience the terror of a tornado.

Jack and Annie travel in their magic tree house to Elizabethan London, where they become actors in a production of A Midsummer Night's Dream and try to rescue a tame bear.