The monkey park was one of the highlights of our trip to Kyoto and Japan. The hike is about 20-25 minutes depending on the pace, but it's manageable. And unlike most hikes, this was one of the few that is worth it. There are a bunch of monkeys at the park, and the views are amazing. This is a good chance to use up the Japanese coins you've accumulated because you can buy diced apples and peanuts to feed the monkeys, which was a fun experience. There are attendants at the top, so it's safe and pretty well organized. From the JR station, exit the Sagaarashiyama station and it's about a 20 minute walk to the entrance of the hike up to the monkey park. Go in the morning, when it's not hot so you won't sweat during the hike, and then afterwards you can walk around Arashiyama.
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