Take a trouble-free trip to Phnom Kulen by booking your national park admission ticket online in advance. Save time by skipping the visit to the ticket office and have your ticket, which will be your pass for visiting Cambodia’s most sacred mountain, delivered directly to your hotel. With this ticket, visit Cambodia's biggest Reclining Buddha, carved on sandstone and located on top of the hill which can be reached through a flight of steps. Next, set off to the sacred river of 1000 Lingas. There, the riverbed is interestingly carved with numerous lingas, a phallic symbol of the Hindu god, Shiva. You will also see some rock carvings along the river depicting Hindu deities. Then, continue through another sacred site, the Phnom Kulen Waterfalls. Calm your senses by watching the waterfall tumbling down the rocks. You will have time to wade in its basin and opt to cool-off from the midday sun by swimming on its pool.