Santi-chaiprakan Park is situated in the area of Phra Sumen Fort, a fortress that was built during the reign of King Rama I. The fort is considered as an ancient archaeological site, and is one of the most important buildings in Thai history. Originally, this fort was in dilapidated condition. The government then restored it, and improved the surrounding landscape to be a public park over the area of approximately 8 rai (12,800 sq.m.) of land to honor His Majesty King Rama IX on the auspicious occasion of the 6th anniversary of His Majesty the King's Birthday on 5 December 1999. The area of Phra Sumen Fort is a place for you to relax and soak up the beautiful scenery of the Chao Phraya River while appreciating the beauty of arts and architecture of historic site.
"Santi-chaiparkarn Park" is a symbol of victory of peace and a place where the last 100 years old Lamphu Tree (Cork Tree or Mangrove Apple Tree) used to stand here. Unfortunately, it withered and died after the great flood in 2011. Also, it believed that the name of "Banglumpoo" area derived from this "Lamphu".