Erdene Zuu Monastery, Mongolia's oldest surviving Buddhist monastery, is located in Kharkhorin and is reasonably accessible via bus or private vehicle from Ulaanbaatar. While solo visits are possible, a guided tour is highly recommended to fully appreciate its historical and religious significance, as interpretive information on-site is limited. The monastery is open year-round, but the most comfortable visiting season is during the warmer months from June to September, as Mongolian winters are severe. Expect an entrance fee of a few USD (typically 5,000-10,000 MNT), with potential additional charges for photography. A typical visit duration ranges from 2 to 4 hours to explore the extensive complex and nearby Kharkhorin Museum. Visitors should dress respectfully as it remains an active place of worship.