|Gol Ghar with the dry bed of the river Ganges in the back ground|
Built in the native Stupa architecture, Gol Ghar has a foundation of 125m, and a height of 29 m. It is pillarless with a wall of thickness of 3.6 m at the base. One can climb atop the Golghar through the 145 steps of its spiral stairway around the monument. The spiral staircase was designed so as to facilitate the passage of the coolies, who had to carry grain-bags up one flight, deliver their load through a hole at the top, and descend the other stairs.
The top of the Gol Ghar presents a wonderful panoramic view of the city and the Ganges flowing nearby. At time of its construction, it was the tallest building in Patna. Golghar has never been filled to its maximum capacity and there are no plans to do so. The reason for this is a flaw whereby the doors are designed to open inwards. Thus, if it is filled to its maximum capacity, then the doors will not open.