Sarai, Russia (Google Maps ⧉, OpenStreetMap ⧉)

"Another was sent by Bibars to the Imperial Court in 1261, and several to Barka Khan at Sarai in 1263..."

"The Caspian is here called the Sea of Sarain, probably for Sarai, after the great city on the Volga."

"Sarai (Sara), capital of Kipchak, i. 4; city and its remains, 5n; perhaps occupied successive sites, 6n"

"Uzbeg Khan of Sarai, i. 4n, 6n, 352n"

"Prologue … Sarai—Shang tu—Khitán inscription"