Idealised from the concept of classical European style of Italian renaissance. The famous Koch King Maharaja Nripendra Narayan built this Magnificent Palace in 1885 raised on a basement 150 metres in height. 

This double storied brick building was originally three storied but underwent changes after a severe earthquake at the site in 1887. It was built over an area of 4768.50 sq. m. It now extends 20m from north to south and 90m from east to west. The frontal façade consists of a series of arches resting by an alternate arrangement of narrow and broad piers to contain single and double Corinthian pilasters respectively. The porch is projected in the center to provide main entrance to the building hall recalling the memory of St Peter's Church at Rome. The durbar hall is dodecagon in shape, resting on four arches supported by massive Corinthian pilasters and projecting a lantern at the top. The intrados of the dome is relieved in stepped patterns and flanked by a small elegant balcony and twelve windows opening at the base. In the center of the durbar hall the marble floor contains the royal insignia in pietradura. 

The miniature tower that adorns either side of the central dome enhances the grandeur of the building. Of the various rooms and halls in the Palace that speak of glory of the past include the bedrooms, dressing rooms, drawing rooms, billiard room, kitchen, dining hall, dancing hall, library, toshakhana and the ladies gallery. The roofs and walls of some of the rooms are beautifully painted.