It is located in Ahyeon-dong, Mapo District, Seoul, South Korea.

[1] The first an Eastern Orthodox church dedicated to Saint Nicholas, built for the needs of the Russian Ecclesiastical Mission in Korea, was consecrated on 17 April 1903 in central Seoul.

The current Byzantine-style cathedral was built in 1968 thanks to the Greek soldiers of the UN mission, who raised funds for the construction.

Within the catedral are two icons brought by the first Russian missionaries: Theotokos of Tikhvin and Seraphim of Sarov.

In early December 2018, Bartholomew I visited Korea for the fourth time as Patriarch to commemorate the 50th anniversary of St. Nicholas Cathedral.