The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Titanic trouble! Jack and Annie are in for an exciting, scary, and sad adventure when the Magic Tree House whisks them back to the decks of the Titanic. Is there anything they can do to help the ill-fated ship? Will they be able to save anyone? Will they be able to save themselves? Did you know that there's a Magic Tree House...

"Jack and Annie have survived all kinds of dangers on their adventures in the magic tree house. Now they're sharing their secrets with you! Find out how you can tackle lots of scary situations, including shark encounters, earthquakes, fires, shipwrecks, pandemics, and many more! With full-color photographs and illustrations, facts about real-life survival stories, and tips from Jack and Annie, this is a must-have for all survivors of the bestselling...

What was it like to be a gladiator? How many people died in the destruction of Pompeii? How did Roman children spend their days? Find out the answers to these questions and more in Magic Tree House Research Guide: Ancient Rome and Pompeii. This is the nonfiction companion to Vacation Under the Volcano (Magic Tree House #13).

Discusses dolphins and sharks, their ocean habitats, and general information about oceans and oceanography.

Annie and Jack present information about ancient Greece and the athletic events known as the Olympic games that were held there. Annotation. What was it like to live in ancient Greece? What gods and goddesses did Greeks believe in? How did the Olympics start? What was the winner's prize? Find out the answers to these questions and many more in this Magic Tree House Research Guide. Includes fun facts from Jack and Annie, fantastic photos and illustrations,...

Jack and Annie travel to a monastery in the Swiss Alps where, with the help of St. Bernard dogs and magic, they seek the second of four special objects necessary to break the spell on the wizard Merlin's beloved penguin, Penny.

Jack and Annie don't need another mummy. But that's what they get when the Magic Tree House whisks them back to ancient Egypt. There they meet a long-dead queen who needs their help. Will Jack and Annie be able to solve the puzzle, or will they end up as mummies themselves?.

On Christmas Eve, Jack and Annie's tree house transports them to King Arthur's castle at Camelot, where they undertake a quest to the castle of the Otherworld.

Jack and Annie travel in their magic treehouse to the year 1621, where they celebrate the first Thanksgiving with the Pilgrims and Wampanoag Indians in the New Plymouth Colony.

The magic tree house takes Jack and Annie to an African rainforest, where the siblings encounter gorillas and learn to communicate with them.