This brilliant lift-the-flap book ushers readers through delightful doors of all kinds. Discover and rediscover real worlds as fantastic as the Space Station or as familiar as the inside of a refrigerator. Sail a boat, ride a train, peek behind a stage door—and then investigate what lies behind the many other smaller doors that await inside each place. The clever text and bright pictures include a search-and-find game offering hours of play and learning.