This is the old Klong Prem prison site turned into a park. The gardens, set on 12 acres of land, are spacious and include fitness stations and a children's playground. A watch tower, parts of the original wall and a section of prison cells have been maintained. Open: daily 05.00-21.00.
Getting there: Suan Romaninart Park is on Mahachai Rd, near the Giant Swing on Bamrung Muang Rd. Parking may be available ill the area around Siri Phong Rd.
Unedited from ANZW Bangkok Guide