Gwanghwamun Square
From Tardis Wiki, the free Doctor Who reference
Gwanghwamun Square was a large public square located in Seoul, South Korea decorated with statues and memorials. It was surrounded by tall hotels and office buildings. The Tenth Doctor and Donna Noble passed through Gwanghwamun Square when they visited South Korea while investigating the effects of the Rempaths. (PROSE: In the Blood)