"Old Sarai", or "Sarai Batu" or "Sarai-al-Maqrus" was established by Mongol ruler Batu Khan in the mid-1240s, on a site east of the Akhtuba river, near to the modern village of Selitrennoye. This site was most probably located on the Akhtuba River, a channel of the lower Volga River, near the contemporary village of Selitrennoye in Kharabali District, Astrakhan Oblast, Russia, about 120 km north from Astrakhan. Sarai was the seat of Batu and his successor Berke. Under them Sarai was the capital of a great empire. The various Rus' princes came to Sarai to pledge allegiance to the Khan and receive his patent of authority.
New Sarai
"New Sarai" or "Sarai Berke" was at modern Kolobovka, formerly Tsarev, an archeological site also on the Akhtuba channel 85 km east of Volgograd, and about 180 km northwest of Old Sarai; or possibly on the site of Saqsin. The bishops of Krutitsy resided in Tsarev from 1261 to 1454. It had probably succeeded Sarai Batu as the capital of the Golden Horde by the mid-14th century. Sarai was described by the famous traveller Ibn Battuta as "one of the most beautiful cities... full of people, with the beautiful bazaars and wide streets", and having 13 congregational mosques along with "plenty of lesser mosques". Another contemporary source describes it as "a grand city accommodating markets, baths and religious institutions". An astrolabe was discovered during excavations at the site and the city was home to many poets, most of whom are known only by name. Both cities were sacked several times. Timur sacked New Sarai around 1395, and Meñli I Giray of the Crimean Khanate sacked New Sarai around 1502. The forces of Ivan IV of Russia finally destroyed Sarai after conquering the Astrakhan Khanate in 1556. In 1623-1624, a Russian merchant, Fedot Kotov, travelled to Persia via the lower Volga. He described the site of Sarai:
Here by the river Akhtuba stands the Golden Horde. The khan's court, palaces, and courts, and mosques are all made of stone. But now all these buildings are being dismantled and the stone is being taken to Astrakhan.
Since Old Sarai lies at 120 km from Astrakhan and New Sarai at 300 km, it is difficult to decide to which of these two cities this description applies. After the destruction of New Sarai, Russia established the fortress city of Tsaritsyn to control the area.
Little Sarai
Sarai Juk was a city on the Ural River. It is often conflated with the other Sarais in historical and modern accounts. This town was the main city of the Nogai Horde, one of the successors of the Golden Horde. Although sacked by the Ural Cossacks in 1580, it was later used as the headquarters by some Kazakh khans.