Lak Si Rat Samoson Temple is a royal temple affiliated with the Maha Nikaya tradition. It is situated along Damnoen Saduak Canal in Village No. 2, Ban Lak Si, Yok Krabat Subdistrict, Ban Phaeo, Samut Sakhon Province. The temple was established on land donated by Mrs. Chaem Wasukree, showcasing her devout faith in contributing land for the construction of the temple. Initially, the temple had a basic structure with a single-roofed cubicle. Over time, an old house was donated and repurposed as a wooden monastery, expanding the temple premises. The monastery was named Wat New Lak Si, reflecting its location near the main canal boundary. Later, it was renamed "Wat Lak Si Rat Samoson," retaining the sacred significance.

The temple's most revered artifact is Luang Pho To, an ancient Buddha image dating back to the U Thong period. This image is crafted from red sandstone, depicting the posture of Mara with a gentle smile and a full face. Originally found at an abandoned temple near the Mae Klong River in Bang Khon Thi District, Samut Songkhram Province, it was initially enshrined at Wat Don Manora. Subsequently, in 1927, during the abbacy of Luang Phor Faeng, the Buddha image was relocated and enshrined in the temple. Devotees visit to pay their respects, seek blessings, and adorn the image with gold, giving it a radiant brass-colored appearance. Notably, an annual gilding ceremony is organized on the 3rd night of the waning moon in the 4th lunar month, accompanied by a procession featuring Luang Pho To.