The indicative inventory of natural heritage: these various cartographic layers are essential for a comprehensive understanding of natural heritage, allowing authorities and stakeholders to monitor, protect, and promote trees and sites with heritage value (gardens, squares, parks, woods) in the region. The inventory of architectural heritage. The archaeological and historical inventory of the Brussels Region: this group of cartographic layers presents a detailed thematic inventory of archaeological and historical sites in the center of Brussels (Pentagon).

This layer includes the collective opinions issued by the Royal Commission of Monuments and Sites on both protection proposals and requests for work on buildings or sites, whether or not they are protected. The description of each specific procedure, during which the RCMS provides its opinion, is available on its website: https://crms.brussels/procedures.