Hakone isn't a single sight — it's a mountain onsen region you travel through in a loop, ticking off a volcanic valley, a lake, an open-air art museum and a hot-spring soak along the way. Here's what's actually worth your time, and what to leave for a return trip.
Do these as a clockwise loop (railway and ropeway first, lake and onsen second) and you'll stay ahead of the tour buses that flood the lake by late morning.
Mt Fuji is shy. Your best odds are a clear morning in autumn or winter; summer haze usually hides it. Hydrangeas line the railway in mid-June, and autumn colour peaks early-to-mid November — both gorgeous and both busy, so start early.
Our route does the whole loop in one day without the queues.
See the day-trip routeHakone has a cluster of small museums — glass, music boxes, perfume. They're pleasant but they'll eat the hours you need for the loop. Save them for an overnight, when the reward is slowing down rather than seeing more.
Hot springs (onsen), views of Mt Fuji across Lake Ashi, the volcanic valley of Owakudani, and a scenic loop you ride by railway, ropeway and boat.
One full day covers the classic loop. Stay a night if you want a proper ryokan onsen and a slower pace.
Hakone wins for onsen and Fuji views; Nikko wins for grand shrines and waterfalls. For a relaxing soak near Tokyo, choose Hakone.