Kernave

City · c. 1279 CE · in Europe

Capital of Grand Duchy of Lithuania (1279–1321).

Perpignan (c. 1279 CE): Capital of Kingdom of Majorca (1279–1343).
Palma (c. 1279 CE): Capital of Kingdom of Majorca (1279–1343).
Jawor (c. 1279 CE): Capital of Duchy of Jawor (1279–1313).
Pernes-les-Fontaines (c. 1274 CE): Capital of Comtat Venaissin (1274–1320).
Racibórz (c. 1285 CE): Capital of Duchy of Racibórz (1285–1304).
Zeila (c. 1285 CE): Capital of Ifat Sultanate (1285–1414), Adal Sultanate (1415–1546), Sultanate of Harar (1547–1577).
Gondar (c. 1272 CE): Capital of Ethiopian Empire (1272–1889).
Khanbaliq (c. 1271–1368 CE): Capital of Mongol Empire (1271–1293), Yuan Dynasty (1294–1368).
Timisoara (1266 CE): Capital of Kingdom of Hungary (1315–1323).
Legnica (1264 CE): Capital of Duchy of Legnica (1279–1313).

Around the same time and place

Mongol invasion of Rus’ and Europe (1236–1242 CE): Mongol armies under Batu and Subutai conquered Volga Bulgaria and the Rus’ principalities, destroyed Kiev in 1240, and in 1241 won at Legnica and Mohi, before withdrawing from Central Europe in 1242.
Mongol invasion of Kievan Rus' (1237–1242 CE): Mongol armies under Batu Khan destroyed Ryazan, Vladimir and Kyiv, subjecting the Rus' principalities to Mongol overlordship for over two centuries.
Giotto’s Scrovegni Chapel frescoes (1305 CE): Giotto covered the walls of a Padua chapel with the lives of the Virgin and Christ under a starry blue vault. His solid, feeling figures broke with Byzantine stiffness and began the road to the Renaissance.
Trier (16 BCE – 1618 CE): Capital of Electorate of Trier (1333–1618).
Kosice (1230 CE): Capital of Principality of Upper Hungary (1683–1685).
Berlin (1244 CE): Capital of Margraviate of Brandenburg (1260–1414), Electorate of Brandenburg (1422–1618), Brandenburg-Prussia (1619–1701), and 5 more.
Glogow (c. 1250 CE): Capital of Duchy of Glogow (1250–1313).
Klaipeda (1252 CE): Capital of Kingdom of Prussia (1707–1708).