If you're looking for some mental stimulation, make sure you check out Tateyama Museum of Toyama- Mandala Yuen Park. Whether it's history, culture or beliefs, you'll find plenty of intriguing displays to keep your mind active here.
Situated in Tateyama, this collection of historical artifacts is worth a look. But you'll find plenty more to see and do in the area. Tateyama Mountain Ski Area, Ryujin Waterfall, and Awasuno Ski Area aren't too far from Tateyama Museum of Toyama- Mandala Yuen Park.