You have different choices for searching legally protected heritage from mainland Portugal, either through "Pesquisa Geral" (general search form) or "Pesquisa Georreferenciada" (atlas based georeferenced search), as a result of implementation of the project "Inventorying and digitizing the Historical and Cultural Heritage".
In "Pesquisa Geral" ( General search form) two groups of information are available "Património Imóvel" (legally protected assets) and "Património Arqueológico" (archaeological heritage). The latter is based on the Endovélico Archaeological Information and Management System.
You may also access "Pesquisa Temática" (Theme Search) in order to find information about "Património Mundial" (World Heritage) and "Itinerários e Inventários Temáticos" (Thematic Routes and Inventories), as in the case of Cistercian Routes, , Alentejo Historic Bridges, Modern Movement and others.
Registering legally protected assets is a nation-wide pioneer experience, as it includes the boundaries of the asset and those of its protection zones, a description of both, as well as georeferenced data, all of which are available on the Internet, through the ATLAS of Municipalities or Historic Centres.