Photo: 663highland, CC BY 2.5 Free parks & gardens in Osaka
Photo: 663highland, CC BY 2.5 
Photo: 663highland, CC BY 2.5 Namba Parks rooftop garden
Free, always
Photo: Sakai Yayoi, CC0 Tennoji Park Tenshiba
Free outside, paid inside
Photo: Sakai Yayoi, CC0 Osaka Station City rooftop gardens
Free, alwaysKema Sakuranomiya Park
Free, always
Photo: 663highland, CC BY 2.5 Osaka Mint cherry blossom passage
Free at certain timesTsurumi Ryokuchi Park
Free, alwaysUmekita Park
Free, always
Photo: Rei at en.wikipedia, CC BY-SA 3.0