The Classification of Built Heritage in Portugal, which are deemed to be of sufficient historical value, include various heritage sites classified into three different classes..
The Classification of Built Heritage in Portugal corresponds to a group or independent Portuguese archeological civic, military and religious cultural properties deemed to be of sufficient historical value by the Direcao-Geral do Patrimonio Cultural for protection and conservation. Today, there are 15 Portuguese sites recognized as World Heritage Sites. Owing to their relative value, the properties can obtain one of several classifications, that include: National Monuments, Properties of Public Interest or Properties of Municipal Interest. 
