MYSTERIOUS LOCATIONS: All over the world there are places with unexplained mysteries. How was this built? Why was this built? Let's discover what we DO know about these mysterious locations, and what is still left to learn! HIDDEN, LOST, AND DISCOVERED: Go on an epic journey to explore some of the most interesting places from around the world. Some people may not even know they exist! BENEFITS: Discovering the world's intriguing history will engage readers in this high-interest lower-reading-level series, and keep them coming back for more!

Mode of access: World Wide Web