Porto de Mós is a town and a municipality of Estremadura province in Leiria District. It is in the Centro Region and the Pinhal Litoral subregion. The population in 2011 was 24,342, in an area of 261.83 km2.

Serras de Aire e Candeeiros Natural Park (PNSAC) is a natural park in central west Portugal. It occupies an area of 383.9 km2 (148.2 sq mi) and is the most important repository of limestone formations in Portugal with a variety of geological formations associated with karst topography such as caves, sinkholes, uvalas, poljes, limestone pavements, ponors, among others. It was made a protected area in 1979 with the intend to protect the existing natural aspects and the architectonic and cultural heritage linked to the local populations.