Monument for the 40th Anniversary of King/Emperor Gojong's Enthronement (), also called Bigak (), is a pavilion near Gwanghwamun in central Seoul. The pavilion was built in 1902 to commemorate the 40th anniversary (Ruby jubilee) of Emperor GojongâÂÂs coronation and his 50th birthday, as well as the founding in 1897 of the Korean Empire.