Of all the day trips sold to visitors from Tokyo, the Hakone Open-Air Museum (彫刻の森美術館, Chokoku-no-Mori Bijutsukan) is one of the few that genuinely earns its reputation. It’s not just a lawn with a few statues — it’s a 70,000-square-meter hillside park with over 120 sculptures, a dedicated Picasso collection, hot spring foot baths, and views over the surrounding mountains that change character with every season. Opened in 1969 as Japan’s first open-air museum, it remains the best reason to break up a Hakone onsen trip with something that isn’t a bath or a lake cruise. Here’s what you actually need to know before you go.
What makes this museum different
Most art museums ask you to walk quietly past things behind glass. This one wants you to touch, climb, and occasionally lie down inside the work. Gabriel Loire’s “Symphonic Sculpture,” a 18-meter stained-glass tower, has a spiral staircase you climb to look out through colored panels. Niki de Saint Phalle’s enormous “Miss Black Power” and other pieces from her collection are scattered across open lawns kids are encouraged to clamber over. There’s a dedicated children’s play structure made of netting strung between towers, and a foot bath (ashiyu) fed by real Hakone hot spring water where you can soak tired feet for free with your admission ticket — bring a small towel, since none are provided.
The museum also rotates temporary exhibitions through an indoor gallery space, so even repeat visitors tend to see something new.
The Picasso Pavilion
The museum’s single biggest draw is the Picasso Pavilion, a separate indoor building holding roughly 300 works — ceramics, paintings, sketches, and glasswork — donated to the museum and kept on long-term rotating display rather than shown all at once. It’s one of the largest collections of Picasso’s output outside Europe and is included in the standard museum admission, with no extra ticket needed. Photography rules vary by piece and are marked on-site, so check signage before shooting. Plan for 30–45 minutes inside if you want to actually read the captions rather than speed-walk it.
Hours, admission, and practical details
- Hours: 9:00–17:00 daily (last entry 16:30), open year-round with no regular closed days — a genuine advantage over Hakone’s many museums that close on Tuesdays or Thursdays.
- Admission: ¥1,600 for adults, ¥1,200 for university/high school students, ¥800 for elementary/junior high students, free for younger children. Prices and hours shift occasionally, so check the museum’s official site shortly before your trip.
- Payment: Cash and major IC cards are accepted at the ticket counter; the on-site Picasso Pavilion shop and restaurant also take credit cards.
- Hakone Free Pass discount: If you’re holding the Odakyu Hakone Free Pass (covers trains, buses, and the ropeway around Hakone), it gets you a modest discount on admission — show it at the ticket window.
- Time needed: Budget 2–3 hours minimum; closer to 4 if you want to linger at the foot bath, eat on-site, and see the full Picasso collection without rushing.
How to get there
The museum sits directly outside Chokoku-no-Mori Station on the Hakone Tozan Line — walk out of the station and you’re basically at the entrance, no bus or taxi required. That makes it one of the easiest-access attractions in Hakone.
From Tokyo, the standard route is: take the Odakyu Romancecar limited express from Shinjuku Station to Hakone-Yumoto (about 85 minutes, reserved seating, roughly ¥2,470 one-way including the express surcharge), then transfer to the Hakone Tozan Line local train toward Gora and get off at Chokoku-no-Mori (about 25 minutes, under ¥500). If you’re navigating Shinjuku’s platforms for the first time, the Odakyu Romancecar departure area is on the station’s west side and is easy to miss among the station’s many exits — our Shinjuku Station wayfinding guide is worth a skim beforehand so you’re not hunting for the right concourse with a train to catch.
Driving is an option too, with a paid parking lot on-site, but Hakone’s mountain roads get congested on weekends and during peak leaf-viewing weeks. If you’ve rented a car for the trip and it picks up mud or grime on these winding roads, a coin-operated car wash near the rental return is a quick fix before you hand the keys back.
Best time to visit
Spring (April–early May) brings flowering trees and mild weather across the sculpture lawns. Autumn (mid-November) is arguably the best window, when the surrounding maples turn and the outdoor setting makes the most of the color — this is also the single busiest stretch, so arrive at opening if you want photos without crowds in the frame. Summer is green and pleasant but can be humid and hazy, cutting into the mountain views. Winter is the quiet season: cold but clear, with thinner crowds and a real chance of seeing Mt. Fuji from certain vantage points on a crisp day, though some outdoor comfort (and the foot bath) becomes more appealing than ever. Whatever season, go on a weekday if your schedule allows — weekends and Japanese public holidays bring tour groups that bottleneck the Picasso Pavilion entrance.
Common mistakes to avoid
- Treating it as a quick stop. Visitors who allot 45 minutes end up rushing past most of the grounds. This is a hillside park, not a single gallery room — walking between the furthest sculptures and the Picasso Pavilion takes real time.
- Forgetting a towel for the foot bath. The ashiyu is genuinely nice after a day of walking, but there’s nothing provided to dry your feet with — a small towel from your hotel or a convenience store solves this.
- Not checking the weather. It’s an outdoor museum; heavy rain makes it considerably less enjoyable since most of the collection has no cover. If you’re staying overnight at a Hakone ryokan, it’s worth also knowing about the small onsen bathing tax added to hot spring stays in the area — it’s a few hundred yen per person per night, usually collected by the accommodation, and catches first-time visitors off guard when it shows up on the final bill.
- Skipping the restroom before the next leg of the trip. Facilities on-site are fine, but if you’re continuing on to the Hakone ropeway or Owakudani afterward, it’s worth topping up before you leave — our guide to finding public restrooms in Japan covers what to expect at smaller stations further up the mountain.
Food and budget options on-site
There’s a sit-down restaurant near the Picasso Pavilion serving a reasonably priced lunch set (pasta, curry, and similar dishes generally in the ¥1,200–1,800 range), plus a more casual café for coffee and light snacks. Budget travelers can bring a packed lunch and eat at one of the open-air tables scattered across the grounds — there’s no rule against it, and the hillside picnic spots are arguably better than the indoor seating anyway. If you want a splurge, a few of the better Hakone ryokan offer kaiseki dinner sets that pair nicely with an afternoon at the museum, but that’s a separate budget line from the museum visit itself, which stays modest no matter how you spend the day.