This is one of the oldest and grandest palace complexes in all of Xian which also happens to be the place which the Trang emperors once called their home. Renovated about a decade back, the park is a cultural marvel that is a treat to explore. Almost two third of the park is free to enter and is rather sufficient to enjoy historic architecture and beautiful landscaping. If you, however, want a slightly more immersive experience, you could always pay and visit the cultural heritage and exhibition which requires admission.