Mausoleum of Khorezmian sheikh Seyid Ala Ad-Din (died in1303) is one of the most ancient and esteemed historical places of Khiva. Actually the mausoleum is very unpretentious low dome construction deeply ingrown in the ground. Inside the mausleum there is a nice majolica grave­stone of the 14th century decorated with a vegetative ornament and Arabian inscrip­tions. Later to the tomb there was built a memorial domical-portal mosque. The whole brick complex of the mausoleum had been formed by the 19th century and repaired by order of Alla-kuli-khan in 1825.