Tobu Zoo is known as the homw of Kawasemi, a magnificent Intamin Mega-Lite. Of course, no one would have a problem riding Kawasemi all day, but if you think that is the only reason to come to visit the park you would be incorrect. Regina is easily the best woodie still running in Japan. Plus there over a dozen additional flat rides that are either old school or unique. You'll find a great 4D Theater, haunted walk-through, an adventure maze challenge (Galaxy Walkers), a simulator, go karts and a haunted swing.
On top of all that you have a zoo and a large children's playground. The park is very spread out and some areas are lacking in shade.