The historical city of Hoa Lu, once the capital of ancient Vietnam, is a captivating site where two venerable temples honoring the Dinh and Le emperors are surrounded by imposing limestone mountains. This area provides a serene and insightful connection to the nation's early dynasties. Complementing this historical richness is the breathtaking Trang An Scenic Landscape Complex, a designated UNESCO World Heritage Site. Trang An is famed for its stunning geological features, including emerald waterways that weave through submerged caves and towering jungle-covered karsts. Taking a traditional boat ride here is an essential experience, revealing a tranquil and majestic natural paradise often likened to a massive water garden.