Time Out says
Located along the banks of the Chao Phraya River, Suan Santi Chaiprakarn Park offers a fun, relaxing vibe and magnificent views of the Rama VIII Bridge. Built around Phra Sumen Fort, a structure dating back to the reign of Rama I, the park features a number of lamphu trees, which inspired the name of the Banglumphu district. Visitors to the park engage in activities like jogging, Chinese martial arts, aerobics, fishing and many more. You can see Thai people of all ages enjoying themselves here, as well as foreigners and tourists straggling in from nearby Khaosan Road.