Klong Maha Sawat or Klong Chaiyapruek is a canal starting from the Bangkauew Canal or Bangkok Noi Canal near Wat Chai Pruek Mala, it flows through the boundary between Bang Kruai district, Nonthaburi and Taling Chan and Thawi Watthana district, Bangkok pass through Phutthamonthon District and go out the Tha Chin River in Ngiew Rai sub-district ,Nakhon Chaisri District, Nakhon Pathom with a total of 28 km long. This canal began to be excavated on 13 September 1859 during the reign of King Mongkut for shortcut distant to worship the Pra Patom Chedi. After digging the canals from the Nakhon Chaisri River to the Phra Pathom Chedi, He ordered to Chao Phraya Tippakorn Wong Maha Kosa Tib Bodhi (Khum Bunnak) and Pra Pasi Sombat Borriboon to be the incharger to hire Chinease to dig. Completed on May 1, 1860, it was considered the largest canal at that time. It was 7 meters wide or 14 meters wide. It used a total of 1,101 scales, weighing 10 gems and treasures. Chao Phraya Thipakorn Wong 1, weighing 10 pound 1,000, is the money of the goddess of money (money) was confiscated into treasure treasure. When the canal was completed, King Rama IV ordered Chao Phraya Tippayawong to occupy the land on both sides of the canal. The first community that came was villagers who moved from the Nakhon Chaisri River. Chao Phraya Tippayawong also gave a pavilion for people to walk along the canal every 100 lines, as well as writing pavilions, treating various diseases as charitable donations. Later called "Sala Ya" is the pavilions 1-4 and 6-7. The 7th Sala is called Sala Din and the 5th Sala was built in Charity of the people of Chao Phraya Tippayawong. Corpses "nowadays. "Sala Thammasop" and the name of the district with the railway station in Thawatthana district of Bangkok. The Maha Sawat Canal also has a water gate at the Royal Irrigation Department. On the Tha Chin River and Pratunam Chimphli on the Chao Phraya River. Today, this canal is still a popular route for villagers and a major tourist attraction.