Fodor's Expert Review Hakone Kowakien Yunessun
This complex on the hills overlooking Hakone has more than the average onsen. In addition to all the water-based attractions, there is a shopping mall modeled on a European outdoor market, swimsuit rental shop, massage salon, and game center. The park is divided into two main zones, called Yunessun and Mori no Yu (Forest Bath). In the Yunessun side, you need to wear a swimsuit, and can visit somewhat tacky re-creations of Turkish and ancient Roman baths. You can also take a dip in coffee, green tea, sake, or red wine. It is all a bit corny, but fun. Younger visitors enjoy the waterslides on "Rodeo Mountain." In the more secluded Mori no Yu side, you can go au naturel in a variety of indoor and outdoor, single-sex baths. When signing in at reception, get a waterproof digital wristband that allows you to pay for lockers and drink machines within the complex.