The Perfume Pagoda is a buddhist temple built in a cave deep in the ground. The trip is quite fascinating because you go up a river in a boat rowed by a Vietnamase woman. Until recently the trip would also include a hike up a 4 km trail. A gondola, identical the one I ride to work everyday during the winter, takes passengers up to the Pagoda and back. It is probably just a matter of time before the boats get modernized.