All heritage is a legacy of the past and an important component of this, responsible for the formation of our identity and reference for our future. Because of this, the protection and conservation of historical monuments, it is a fundamental action in society today and for future generations. Thus, as an undergraduate thesis, it is proposed update, revise and supplement the book “Historical Monuments of Maranhão,” written in 1979 and considered the first asset inventory of Maranhao, aiming to contribute to the perpetuation of the memory of the historical buildings on the impossibility their immediate restoration. During the research was carried out thorough research on the history, conservation status and photographic survey of 82 buildings and squares contained in the original book, locating them on maps easy to read and location so that everyone could have access to the knowledge offered. To deepen knowledge and better understand the context in which the book was produced, was also
