The Serakhs oasis experienced significant development during the 10th to 12th centuries. The number of settlements increased, and cities were improved. It is known that masters from the Serakhs architectural school were invited to many cities in Central Asia, including the city of Merv. Two structures that vividly characterize the architecture of the city's flourishing period have been preserved in the Serakhs oasis: the mausoleums of Abu'l-Fazl and Yarty Gumbez.

Serakhs and its oasis gained importance during the struggle between the Seljuks and the dominance of the Ghaznavids. All these facts determine the exceptional importance of the preserved architectural monuments of ancient Serakhs as evidence of the regional school of builders of the 11th and 12th centuries. Having developed their own style, the architects of Serakhs played a significant role in the overall development of medieval architecture in Khorasan.

The mausoleum of Abu'l-Fazl is a significant historical and architectural monument in the Serakhs oasis. It entered the field of study only in the 1940s after the work carried out by the architectural detachment YUTAKE and the architect A. M. Pribitkova, who conducted measurements and presented a reconstruction.

The tomb of Abu'l-Fazl represents a monumental composition that combines a powerful parallelepiped of the main volume with a dome on a cylindrical drum. The structure is made of fired bricks (23 x 23 x 4 - 4.5 cm). The square-shaped building (side 15.4 m) contains a square chamber (side 10.2 m) expanded by four deep pointed niches. The entrance is located in the eastern niche, which has a portal. On both sides of the entrance, within the thickness of the walls (2.5 m), spiral staircases lead to the base of the sub-dome drum, which was once surrounded by a circumferential arched gallery (now in ruins).

At a height of about 5 m, the quadrilateral transitions into a hexagon through arched sails, then into a dodecagon and a cylindrical drum that supports a double-layered brick dome. The gallery surrounding the drum is covered with vaults executed using the method of inclined segments.

Each facade is divided by pilasters into five panels, topped by a narrow strip of brickwork and adorned with flat arched niches. In the 15th century, an elevated portal was added to the eastern facade. The walls are built with ornamental masonry using paired bricks separated by a vertical half-brick. The concise external appearance corresponds to the clear tectonics of the interior. In the sail tier, alabaster stalactites appeared in the 15th century. The compositional simplicity, proportional clarity, and high level of masonry execution place this structure among the outstanding monuments of ancient architecture in Turkmenistan.