HORSE TAIL waterfall in the Historic Garden of the Stone Monastery, seen from the Iris Grotto that passes behind the waterfall. Looking down you can see the steep staircase that runs parallel to the waterfall along the stone wall. The Park - Historical Garden offers a spectacular tour through a surprising landscape where paths and trails cross waterfalls, streams, lakes and caves. The Park belongs to the 12th century Stone Monastery complex, part of the monastery has been converted into a hotel and the other part of the monastery can be visited.