Location of Nasu in Tochigi
Nasu (那須)  is a sprawling rural town in northern Tochigi Prefecture, Japan. Parts of it are within the boundaries of Nikko National Park.
Nasu-Shiobara (那須塩原) on the JR Tohoku Shinkansen line is the nearest station, about 1:15 from either of Tokyo or Sendai. A free bus shuttles passengers to some hot spring resorts from here; alternatively, it's 10 minutes on the JR Tohoku Main Line to Kuroiso (黒磯) station.
Because of its hilly terrain and the large area it covers, Nasu is probably best seen by car.
Entrance to the Murder Stone
- Murder Stone (殺生石 Sesshoseki). A large boulder that has been belching out noxious fumes for centuries, killing small critters who venture nearby. (Humans seem to manage.) According to legend, when Lady Tamamo, the lover of Emperor Konoe (c. 1150), was executed for being a fox in disguise, her soul turned into the stone. Haiku poet Matsuo Basho also paid his respects here on his Narrow Road to the Deep North. Free.
Nasu is highly volcanic and there are no less than seven hot springs in the Yumoto (湯本) area alone. The Nasu Onsen Ryokan Association  has a handy booking engine, but alas, only in Japanese.
Mount Nasu is a good spot for hiking and, in winter, skiing and snowboarding is available at Mount Jeans ski resort on the slopes of the mountain.
The Nasu Kogen (Nasu Highland) region is home to numerous "attractions", some more dubious than others, including a Monkey Park, Teddy Bear Museum, Car Museum and Animal Kingdom, where dogs can be rented by the hour (complete with authentic New Zealanders hosting a sheep shearing show).
- Ubudo Nasu (Ubud Nasu), located in the Nasu Kogen area, is a Balinese-themed shopping complex with passable Vietnamese and Balinese style restaurants. The Balinese style restaurant has a terrace with excellent views of the surrounding area. Lunch sets are available from about ￥1200.
- Nasu Kogen Brewery, in the Nasu Kogen area has a variety of locally brewed beers. Though not inexpensive (around ￥3000 for a six-pack), the beers are excellent.