What is the meaning of 長安?

Chang'an (an ancient capital of various Chinese empires located within present-day Xi'an)

(～區, formerly ～縣) Chang'an (a district and former county of Xi'an, Shaanxi, China)

(～區) Chang'an (a district of Shijiazhuang, Hebei, China)

(～鎮) Chang'an (name of various towns in China)

1. Chang'an (a town in Dongguan, Guangdong, China)

Chang'an (a town in Dongguan, Guangdong, China)

(～鄉, ～土家族鄉) Chang'an (a township in Fengjie, Chongqing, China)

Tràng An Scenic Landscape Complex (an UNESCO World Heritage Site in Ninh Bình Province, Vietnam)

capital city

Chang'an

hanja form of 장안 (“Chang'an”)

Nôm form of Tàng An (“Chang'an”).

chữ Hán form of Tràng An (“Chang'an”)

Source: wiktionary.org