So Heng Tai Mansion

It was built by Phra Aphaiwanit (Chat, of the So (蘇) clan, 1813–1849), a Hokkien Chinese bird's nest tax farmer with ancestry from Fujian who eventually joined the nobility under King Rama III.

The house has continuously been inhabited by his descendants, including one branch who now form the Poshyachinda family.

It is one of the last remaining traditional Chinese houses in Bangkok and claims to be the oldest private residence in the city.

The house has at times been opened to the public, especially since 2014 when the Talat Noi area was promoted as a cultural tourism destination.

Multiple organizations have offered assistance in its restoration, though lack of government support has largely left maintenance of the house to the family's own expense.