I Was Cool With It, Until That Creepy Guy Turned the Heat Up and Poured All Those Noodles In

Presumably that image isn't a result of photoshop trickery. Just a trick of perspective combined with some rather dubious claims made by the propietors of Hakone Kowaki-En regarding the healthful effects of soaking in curry spices (I can't see how that wouldn't just be irritating, I get itchy just thinking about doing that). Also, I wouldn't order the Curry Soup there, they might not let all that good soup stock go to waste, if you follow my meaning.

(found via a Mainichi Daily News Photo Special, photos credited to Reuters)

A larger photo below, and I notice the complex also has waterslides, and two spas, Yunessun seems to specialize in various drink based baths (wine, sake, coffee, green tea to name a few) and Mori NO YU focuses on a place for adults to feel free to get naked while enjoying their soak (the blurb on this spa emphasizes the more private nature of the baths).

Also, at the more intimate style spa Mori NO YU, they make sure all you filthy foreigners know that baths aren't for washing

In the Mori No Yu zone, we have unique bathing areas and bathtubs in various settings. Remember, the bathing experience in Japan means enjoying in Japanese style for relaxation and pleasure, and is not a place to wash your body with soap. In Mori No Yu Zone, please enter the bathing area after you removed your clothes in the provider lockers and washed. There are separate areas for men, and women.

(and a side-note tinged with a bit of delusion, should Miss Japan choose to enjoy a celebratory soak at these spas after she wins Miss Universe tonight, I'm free if she's looking for some company)