Elvas Fortress is a historic military fortification located in Elvas, Portugal. Built primarily in the 16th and 17th centuries, it was designed to protect the region from invasions, particularly during the conflicts between Portugal and Spain. The fortress features a star-shaped layout, which was a common design in military architecture of the time. The fortress is recognized for its impressive walls and bastions, which are made of local granite. It is part of the Garrison Border Towns of Elvas and the Fortifications of Pamplona, a UNESCO World Heritage site. Today, Elvas Fortress stands as a testament to military engineering and history.