A tree, timber, tools, a rope of twisted twine all all things you need to build a treehouse--but most of all you need time and imagination.

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.

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.

Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

Having expanded their treehouse to an astonishing thirty-nine stories, Andy and Terry describe the invention of their "Once-Upon-a-Time machine," which they have designed to write and illustrate their stories for them.

While on a mission to prove to Merlin that they can use magic wisely, Jack and Annie travel to seventeenth-century Venice, Italy, to save the city from disaster. Merlin has asked Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy, in the 1700s. With the help of some new friends, a research book, and a mysterious rhyme from Merlin, the heroes will save the beautiful city from a flood! Yet another...

Jack and Annie travel in their magic tree house to the land of the mystical selkies to seek a magical sword for Merlin.

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.

In Pete the Cat: Tip-Top Tree House, Pete invites all of his friends over to spend time in his tree house. When they climb up, they realize the tree house is not big enough to fit everyone! They all work together to build the coolest tree house ever.

"Andy and Terry live in a 130-story treehouse. (It used to be a 117-story treehouse, but they added another 13 stories.) It has a soap bubble blaster, a time-wasting level, a 13-story igloo, the GRABINATOR (it can grab anything from anywhere at any time), a toilet paper factory, and an extraterrestrial observation centre for observing aliens. As it turns out, though, it's Andy, Terry and Jill who are being observed and then abducted by a giant flying...