The Perfume Pagoda (Chua Huong) is in fact a vast complex of pagodas and shrines built into the limestone Huong Tich mountains. From the middle of the second lunar month to the end of the third lunar month, it is the site of a very popular religious festival which draws large numbers of pilgrims. You first start the trip by boating on a river among a beautiful karstic landscape, then you hike quite a long trail, which is all lined up with stands of food and religious souvenirs, to reach eventually the main sanctuary in a cave. Along the way, there are a great number of other places to worship. It is a festive occasion for the Vietnamese who often make the trip in large groups.