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Ulugh Beg's Astronomic Observatory (1428—1429), rediscovered in 1908. The trench with the lower section of the meridian arc. In Ulugh Beg's time, these walls were lined with polished marble.
{{Information |Description=Ulugh Beg's Astronomic Observatory (1428—1429). It was found in archaeological dig by Samarkand's archaeologist V. Vyatkin at 1908 |Source="own work" |Date=October,2007 |Author=Igor Pinigin |Permission=own work |other_versions