The Kalawar Church (Holy Rosary Church) has been a long standing church throughout the Rattanakosin Kingdom. The church was constructed by the Portuguese people who fled from Ayutthaya when the city fell for the second time. The people settled around Talat Noi on the Chao Phraya riverside on the land iven to them by King Rama I. Since they didn't have a place to perform religious ceremonies, the church was constructed in 1787. The church was consistently maintained, but it was finally rebuilt after a big fire during the reign of King Rama IV.