Aztec boasts 78 structures on both the National Register of Historic Places and New Mexico Register of Cultural Properties.
The Aztec Historic Walking Tour begins at the Aztec Museum & Pioneer Village, located at the north end of historic Main Avenue. The tour follows south, a captivating "back to the past" stroll that leads to an historic neighborhood just east of Main Avenue. A keepsake souvenir guide identifying and describing each of the historic properties is sold for a nominal fee at the Aztec Museum. The photography rich guide greatly enhances the visitor experience and includes several properties and places not on the National Register of Historic Places.
http://aztecnm.com/aztec/history/walkingtour.html
Original source can be found here.