The National Park Service has created over forty "Discover Our Shared Heritage Travel Itinerary" guides since the program started, and this recent guide to the heritage of Indianapolis continues in that tradition of quality material. Working together with the Indiana Department of Natural Resources' Division of Historic Preservation and Archaeology, the guide highlights 59 locations listed in the National Register of Historic Places. Visitors can start their journey through the site at the "Essays" area, which include pieces titled "Ethnic Indy" and "Go Diagonal", which looks at the distinctive diagonal thoroughfares which give the city quite a bit of character. The "List of Sites" area lists each site mentioned in the essays, and the "Maps" feature includes interactive maps of the city and the downtown area.