Chau Sa Citadel is a historical site in Quang Ngai that dates back to the 17th century. It was built as a defensive structure during the Nguyen Dynasty and played a significant role in protecting the region. Today, the citadel stands as a testament to Vietnam's rich history and architectural heritage. You can explore the ancient walls, visit the museum inside the citadel, and learn about the fascinating history of the area. It's a great place to immerse yourself in the local culture and gain insights into Vietnam's past.