Torre de Aguiar de Sousa, também designada Torre de Sousa ou Castelo de Aguiar de Sousa

Torre de Aguiar de Sousa is a square stone structure positioned on elevated ground among hills and surrounded by a fortified perimeter wall. The layout takes advantage of the natural terrain to command views over the surrounding landscape and the passage routes through the region.

The tower was built as a defensive installation to protect mountain passes and served as a key military post during the invasions of the 10th century. Its location allowed it to defend the region against external threats during this turbulent period.

The tower is part of a network of medieval structures spread across Northern Portugal that shows how defensive buildings once connected entire regions. Walking around the site, you can sense how this tower was one piece of a larger protective system that shaped the landscape.

The site is accessible and free to visit, with the best timing being during good weather when paths and viewpoints are easy to navigate. It helps to reach out beforehand for current information about conditions or to arrange a guided experience if you prefer structured insight.

The hills surrounding the tower were deliberately used as a natural defensive barrier, making it extremely difficult for enemies to approach undetected. This combination of construction and terrain shows how builders turned the landscape itself into a protective advantage.