Just a short two hour high-speed train ride from Tokyo will take you to Minami-Uonuma, in the region of Niigata.  Photo 2 of 13 in Hide Out in One of These Asian Retreats That Are Immersed in Nature

Hide Out in One of These Asian Retreats That Are Immersed in Nature

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A two-hour ride on a high-speed train from Tokyo will take you to Satoyama Jujo in Minami-Uonuma. An open-air bathtub allows you to literally immerse yourself in nature.