Elvas is a charming city located in the Alto Alentejo region of Portugal's Alentejo province. Known for its well-preserved military fortifications and historic city center, Elvas is a UNESCO World Heritage site and a popular destination for history and architecture enthusiasts. The city is surrounded by impressive walls and bastions, which were built in the 17th century to defend against Spanish invasions. The star-shaped fortifications are a testament to Elvas' strategic importance in the past, and today they offer visitors a unique glimpse into the city's military history.