How old is the Colosseum in Rome? How long is the Great Wall of China? Readers will find these answers and more as they learn about the location, history, architecture, and special uses of some of the world’s most iconic landmarks in Whole Wide World. Real-life photographs take readers on a trip, while an At a Glance feature provides a map and quick facts on each landmark. Each title includes a table of contents, infographic, glossary, index, compelling What Do You Think? sidebars to encourage deeper inquiry, and reading tips for teachers and parents.