How long is Hadrian's Wall? Where did the soldiers guarding the Wall live? How can we find out how they lived? Some places are so important that they are preserved as heritage sites. They allow us to uncover world history through the places where history was made. This series focuses on heritage sites, representative of different eras, peoples, places and historical events, and takes the reader on a guided tour of each, to discover what can be learned about the past from the surviving evidence.