- Hoa Lu is once depicted the ancient capital of Viet Nam, settled up in the 10th century. Visit temples of two dynasties of Dinh and Le with a very unique architectures in the old time. After that visiting the excavation area beside the Le Dai Hanh temple. You experience the vestiges of Royal Palaces ground dated back 10th century. - Passing through 3 caves "Hang Ca - First cave, Hang Hai - Second cave, Hang Ba - Third cave" to get a strange feeling.