Tsuguro Riverside Park will teach you about the importance of protecting the environment. Walk around the displays — they'll challenge you to contemplate your own ecological footprint.
If you're spending a while in Maniwa, Tsuguro Riverside Park is a good place to start your exploring. This place to learn about the environment is one of many attractions that'll keep you occupied here. Okayama Prefectural Forest Park, Yubara Onsen, and Inubasari Road Station are also ready to be explored close by.