Shangjing Longquanfu

City · c. 756–785 CE · in Central Asia

Capital of Balhae (756–785).

Córdoba (c. 757 CE): Capital of Emirate of Córdoba (757–929), Caliphate of Córdoba (936–1031).
Nekor (c. 760 CE): Capital of Emirate of Nekor (760–1019).
Temsamane (c. 750 CE): Capital of Emirate of Nekor (750–760).
Naples (c. 763 CE): Capital of Duchy of Naples (763–1137), Kingdom of Sicily (1266–1282), Kingdom of Naples (1285–1805), and 2 more.
Aachen (c. 768 CE): Capital of Kingdom of the Franks (768–843), Middle Franks (855–899), Holy Roman Empire (962–1346), and 1 more.
Malamocco (c. 742 CE): Capital of Republic of Venice (742–810).
Tiaret (c. 778 CE): Capital of Rustamid dynasty (778–909).
Dali (c. 779 CE): Capital of Nanzhao (779–902), Kingdom of Dali (947–1253).
Oviedo (c. 724 CE): Capital of Kingdom of Asturias (724–924), Kingdom of Galicia (911–1125).
Cangues d'Onís (c. 724 CE): Capital of Kingdom of Asturias (724–924).

Around the same time and place

Silla (c. 57 BCE – c. 935 CE): Kingdom with its capital at Gyeongju, traditionally founded in 57 BCE, that unified most of Korea in the 7th century.
Todai-ji Great Buddha (752 CE): The Great Buddha of Todai-ji in Nara was dedicated in 752; its hall is one of the largest wooden buildings in the world.
Kyoto (Heian-kyo) (794 CE): Emperor Kanmu moved the capital to Heian-kyo, which remained Japan's imperial capital until 1868.
Balhae (698–926 CE): Kingdom founded by the former Goguryeo general Dae Jo-yeong in Manchuria and northern Korea.
Kojiki (712 CE): The oldest extant chronicle of Japan, recording myths, legends and early history.
Bulguksa (774 CE): Buddhist temple near Gyeongju, completed in 774, a masterpiece of Silla architecture.
Kiyomizu-dera (778 CE): Buddhist temple in Kyoto founded in 778, known for its great wooden stage over the hillside; a New Seven Wonders finalist.