Xanadu

City · c. 1206–1439 CE · in Central Asia

Capital of Mongol Empire (1206–1293), Northern Yuan (1375–1439).

Dresden (1206 CE): Capital of Electorate of Saxony (1547–1805), Kingdom of Saxony (1806–1808).
Auch (c. 1206 CE): Capital of County of Armagnac (1206–1496).
Trabzon (c. 1206 CE): Capital of Empire of Trebizond (1206–1461).
Poitiers (c. 1206 CE): Capital of County of Poitou (1206–1249).
Arta (c. 1206 CE): Capital of Despotate of Epirus (1206–1479).
Avarga (c. 1206 CE): Capital of Mongol Empire (1206–1235).
Andravida (c. 1206 CE): Capital of Principality of Achaea (1206–1432).
Banda Aceh (1205 CE): Capital of Sultanate of Aceh (1516–1903).
Koulikoro (c. 1202 CE): Capital of Sosso Empire (1202–1235).
Kalisz (c. 1210 CE): Capital of Duchy of Kalisz (1210–1219).

Around the same time and place

Genghis Khan (c. 1162 CE – 1227 CE): Temüjin united the Mongol tribes and, as Genghis Khan, launched conquests that created the largest contiguous land empire in history.
Founding of the Mongol Empire (1206 CE): A great assembly near the source of the Onon River proclaimed Temüjin as Genghis Khan, ruler of all the Mongols.
Marco Polo’s journey to China (1271–1275 CE): The Venetian merchant Marco Polo, with his father and uncle, travelled from Acre across Persia, the Pamirs and the Tarim Basin to the court of Kublai Khan. His book of travels shaped European ideas of Asia for centuries.
Forbidden City (1420 CE): Imperial palace complex in Beijing, completed in 1420; home of Ming and Qing emperors and now the Palace Museum.
Goryeo (918–1392 CE): Dynasty founded by Wang Geon with its capital at Kaesong; the name Korea derives from it.
Song dynasty (960–1279 CE): Founded by Zhao Kuangyin with its capital at Kaifeng, the Song saw a commercial revolution, paper money and advances in printing and science.
Kublai Khan (1215 CE – 1294 CE): Grandson of Genghis Khan who founded the Yuan dynasty and completed the Mongol conquest of China.
Yuan dynasty (1271–1368 CE): Kublai Khan proclaimed the Yuan dynasty, the first time all of China was ruled by a non-Han dynasty.