The magic treehouse whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates.

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.

In their magic treehouse, Jack and Annie are again transported to King Arthur's realm, where invisible beings, giant ravens, and mistaken magic spells have a duke's castle in an uproar on Halloween night.

The magic tree house takes Jack and Annie to Africa where they meet up with wonderful wild animals, a very hungry warrior, and where they even solve a riddle.

When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.

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.

When their evil neighbor, also known as the guardian of gloom, lays siege to Treeheart, a kid-forged sanctuary, turning them into pimply teenagers and sullen adults, the survivors of the onslaught call out for Bea Wolf--an unbreakable warrior with a penchant for mischief.

Magic tree house series, #4. The magic tree house whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates.

The magic tree house carries Jack and Annie to New York City in 1938 on a mission to rescue the last unicorn.

Jack and his younger sister take a trip in their tree house back to ancient Egypt. They find themselves in a pyramid's maze and need to find their way out before they become mummies themselves.