The Ghanashyam House is situated at the South-West corner of the Joysagar Tank. Ghanashyam was the famous architect of Karengghar during the reign of Swargadeo Rajeswar Singha. It is a small hut type structure decorated with terracotta works. The uniqueness of this structure is the mix of both Hindu & Islam religions in its architecture.
The man Ghanashyam has also built a number of masonry buildings, temples and other structures in and around Joysagar and from many of such structures, the Ghanashyam House is one. The door openings with arches resemble Islamic architecture. Terracotta works can be seen all over the walls of the monument. The monument does not have any similarity with any typical Hindu temple and also does not have any picture or relief of God/ Goddess. It was built during the rule of Swargadeo Promotta Singha in the year 1744 A.D. It is also known as Nati Gohain Doul.
It is 4.0 Kilometers away from the center of Sivasagar Town towards west.