Takasaki

This mountain and the enormous statue on top of it are the most obvious attractions. You can enter the statue for ¥200 to get a good view of the city from the top. Halfway down the mountain there is a cave with Kannon sculptures carved from the stone inside, along with a Japanese garden. Entrance ¥800. To get there, you can catch a bus from Takasaki Station, although they're infrequent, and it might be more interesting to walk up Kannon-dori and up the (long!) stairs to the top of the mountain.

Famous for being the place where daruma dolls originated. The temple itself is nice, although nothing too special. The small museum of old daruma dolls beside the main temple is interesting.

A collection of ancient keyhole tombs ('Zenpou-Kouen-Fun') along with an archeology museum (and a literature museum, probably of negligible interest). The tombs are roughly 1500 years old and in a distinctive 'keyhole' shape. One has been restored to look as it would have 1500 years ago, complete with haniwa clay figures and pots. English information is good and plentiful.

A forested park. The buildings of these two museums are both notable for their architecture.

A large dormant volcano within Takasaki. By bus from the station it takes about an hour to reach the top. The shrine was founded in 586 and is very scenically located on the side of the mountain beside a river. Lake Haruna is a large crater lake a bit further up with various tourist facilities. It's possible to walk between the two, but the path is fairly long and poorly maintained. Buses come only every hour though, so it may be worth it.

A "power spot" built into the side of large rocks. It was established in 587.