Its neighbouring mausoleum is that of Babadja-khatun (11^th century). It is simple in structure and composition, constructed from baked bricks. No decoration is featured on the walls, though architectural details are accentuated in places in an uncomplicated manner. A cone-shaped dome with sixteen facets, set on a prism-shaped base, lends harmony and symmetry to the mausoleum. Its main facade bears the remainder of an Arabic-lettered inscription: ‘This grand tomb is named Babadja-khatun. Its builder was...’ The name of its builder has, unfortunately, been lost. The mausoleum was built on the grave of Babadja-khatun, who, according to legend, was Aisha’s loyal nurse and guarded the place of her burial to the end of her life.