The Castle of Guimarães is a historic fortress located in Guimarães, Portugal. Built in the 10th century, it played a crucial role in the formation of the Portuguese nation. The castle features impressive stone walls and towers, showcasing medieval military architecture. Surrounded by lush greenery, the castle offers stunning views of the surrounding area. It is a UNESCO World Heritage Site, recognized for its cultural significance. Visitors can explore the castle's interior and learn about its history, making it a popular destination for tourists and history enthusiasts alike.