Behind the replica sits a building that is designed quite different from the rest.
Steps leading down to Phra Sawet Kudakhan Wihan Yot. This building is made of cement embellished with bits of Chinese porcelain. According to the traditions of Thai hramostroitelstva, this building was designed for storing various images of Buddha, the most important of which is the Phra Nak Buddha that was rescued from Ayutthaya during the reign of Rama I. This Buddha is made of gold, silver and copper. Unfortunately, this building is closed to the public, so only the royal family has access to the Buddhas stored therein.