Ak Astana-Baba (Uzbek: Oqostona bobo maqbarasi / Оқостона бобо мақбараси) is a 10th-11th century mausoleum that is located in the Sariosiyo District, Surxondaryo Region of Uzbekistan. The mausoleum was submitted to the UNESCO World Heritage Tentative List on June 1, 1996, in the Cultural category.
- ^ "Оқостона бобо мақбараси" [Oqostona bobo mausoleum] (PDF). National Encyclopedia of Uzbekistan (in Uzbek). Tashkent. 2000–2005. pp. 314–315.
- ^ Ak Astana-baba (mausoleum), UNESCO World Heritage Centre
38°18′04″N 68°01′08″E / 38.3011°N 68.0190°E / 38.3011; 68.0190