"Hakone" refers to an entire region, but its most popular attractions generally operate from 9:00 AM to 5:00 PM. Specifically, the Hakone Open-Air Museum is open year-round from 9:00 AM to 5:00 PM, with the last admission at 4:30 PM. The Hakone Ropeway, which offers the best views of Mount Fuji and the volcanic valley of Owakudani, also typically starts running at 9:00 AM and closes around 4:45 PM or 5:00 PM depending on the season and weather conditions. If you are using the Hakone Free Pass, the mountain buses and the "Hakone Tozan" railway start much earlier, around 6:00 AM, allowing you to reach the trailheads or lakefronts before the crowds. In 2026, it is highly recommended to start your "Hakone Round Course" as soon as the Ropeway opens at 9:00 AM to avoid the heavy mid-day congestion at the Lake Ashi pirate ship docks. Always check the official website on the day of your visit, as volcanic activity or high winds can lead to sudden closures of the Ropeway or the sulfurous vents at Owakudani.