Thiên Hà Grotto, located within the Trang An Scenic Landscape Complex in Ninh Bình, is a breathtaking natural and cultural site. Known as "the Milky Way within the mountain," the cave features a stunning underground river and mesmerizing limestone stalactites.

The ecotourism area offers various tour routes, including boat tours, walking trails, and adventure experiences, allowing visitors to explore multiple caves such as Thiên Hà, Thiên Sơn, Thiên Thanh, and Bụt Cave. A new walking route takes visitors through a bamboo forest, the ancient Hoa Lư Persimmon Tree, and the panoramic summit of Phật Đầu Sơn, offering stunning views of rice fields and wildlife.

The site also holds historical significance, with Mái Đá Ốc Archaeological Site revealing evidence of Vietnamese prehistoric settlements from 7,000–4,000 years ago, including stone tools, pottery, and human remains.

Beyond its natural beauty, Thiên Hà offers an immersive cultural experience, allowing visitors to engage in local farming activities and learn about traditional customs. It’s a must-visit destination for those seeking adventure, history, and tranquility in nature.