A Limia is a county of interesting geographical features, its landscape being characterised by extensive cultivated land on the Limia river plain.

This geography can be clearly observed from the Torre da Pena, set on a hilltop with unobstructed views of the surrounding plains.

The fortress, of which only the keep still stands today, was built in the twelfth century at the same time as other castles such as those of Sandiás, Porqueira and Celme, forming a defensive system against attacks from Portugal.