The Garrison Border Town of Elvas is located in Portugal and is renowned for its well-preserved fortifications. These structures were built primarily in the 16th and 17th centuries to protect the town from invasions, particularly during conflicts with Spain. The fortifications include impressive walls, bastions, and a star-shaped layout, showcasing advanced military architecture of the time. Elvas is also recognized as a UNESCO World Heritage Site due to its historical significance and unique defensive system. The town's fortifications not only served military purposes but also influenced the development of urban planning in border regions, making it an important example of European military history.