Wat Sai is an old Ayutthaya temple like many other in this area. It was renovated in the reigns of Rama IV and V. An exquisite artwork in this temple often overlooked by visitors is an old traditional house by the canal. It is a living proof of the temple’s antiquity. Locals believe that the house was built by King Suea of Ayutthaya during his cruise along the canal. Later it was donated to the temple. It is a one-storied Thai house with three rooms, measuring about 9 by 5 meters, sitting on high poles. The wall panels are blackened and gilded on both sides, from which derived the name. The house is still in good shape, but the gilded motifs are badly weathered.