Overall, the building is constructed in a form of a small, slightly tapering cube, with each side approximately long. There are four identically designed facades which gently slope inwards with increasing height. Wall thickness of approximately at the base of the building assured structural solidity and survival through the ages. Each side has an entrance portal adorned with pointed arches. Many researches note well-studied, almost mathematical, proportions of the building and its harmonious hierarchy. The base of the building is heavy which is accentuated by a wider foundation; four heavy built in three-quarter corner columns, classical in design, contribute to its fortress-like appearance. The top of the building is lightened up through an elegant arcade gallery, placed below the cornice, that have many arched openings to reduce overall weight and to let light inside the building (in contrast, most of chahar taq structures had no windows). A large semi-circular Dome, about 23 ft (7 meters) in diameter crowns the structure and it is similar to the Buddhist domes in the area. Four mini domes placed in the corners of the roof are more decorative in nature. Overall, the mausoleum's builders achieved an elegant hierarchy of diminishing proportions and vertical perspective through the diminishing size of the domes (one large and four small), columns (placed in the corners, portals and gallery) and arches (portals and gallery). Typical for Islamic architecture in general, there is an overlap and ambiguity between the structural and decorative features within the building – bricks being structure and décor, both equally important.