Phi Sua Samut Fort

Phi Sua Samut Fort is a historic coastal fort located on an island at the mouth of the Chao Phraya River in Laem Fa Pha, Phra Samut Chedi District, Samut Prakan. Built in 1819 during the reign of King Rama II, it was part of the river defense system protecting Bangkok. The restored fort features old walls, cannons and mangrove surroundings and is notable as one of the best-preserved early Rattanakosin-era forts.

Visitors can expect a small island fort accessible only by short boat ride from the mainland piers near Phra Chulachomklao Fort. The site includes restored whitewashed ramparts, historic cannons, interior grounds with information boards, and views over the Chao Phraya River estuary and surrounding mangroves. The setting is quiet and open, with paths around the walls and photo opportunities of the river mouth and nearby naval area.