The series of five photos is part of a book project of the city of Quebec to be published in fall 2011. Quebec City is one of the oldest cities in North America. The ramparts surrounding Old Quebec (Vieux-Québec) are the only remaining fortified city walls that still exist in the Americas north of Mexico, and were declared a World Heritage Site by UNESCO in 1985 as the 'Historic District of Old Québec'.[4][5]