In Tennoji Park, tucked behind the Municipal Museum of Art is Keitakuen garden.
A modern garden, built for the wealthy Sumitomo Family who constructed a mansion nearby.
The garden, a stroll type built around a large pond, was designed by Jihei Ogawa who also designed the garden at Heian Jingu Shrine in Kyoto.
It is surprisingly good, though obviously it helps if the weather is good. and only 150 yen for the entrance.