If you’ve only got time to visit one sanctuary among the many caves and pagodas scattered over the slopes of the Mountains of the Five Elements, your best bet is to head to the Huyen Khong Cave on Thuy Son mountain (Mountain of Water). With its mystical and uplifting atmosphere, this is the most impressive of the sanctuaries. A path leads to the different sanctuaries, before arriving at the summit from where there is a magnificent view of the whole complex.