National Assembly Building of the Republic of Korea
- Dome diameter: 210 feet
- Dome weight: 1,000 metric tons
- The green color of the dome comes from its copper plating.
- The roof and dome are supported by 24 pillars.
- The 24 pillars represent 24 different meteorological events on the Asian lunisolar calendar, which was used in Korea until 1895.
- Ipchoon (Start of spring - February 4)
- Woo-sue (Rain/More rain than snow - February 19)
- Gyeongchip (When insects emerge from hibernation - March 6)
- Chunbun (The spring/vernal equinox - March 21)
- Jeongmyung (clear and bright/Time to tend to graves - April 5)
- Gok-woo (Grain rain/Rain to help grain grow - April 20)
- Ipha (Start of summer - May 6)
- Soman (Grains are plump - May 21)
- Mang-jong (Barley harvesting season - June 6)
- Haji (The summer solstice - June 21)
- Soseo (Minor heat - July 7)
- Daeseo (Midsummer/Major heat - July 23)
- Ipchu (The start of autumn - August 8)
- Cheoseo (Limit of heat - August 23)
- Baekro (White dew falls - September 8)
- Chubun (The autumnal equinox - September 23)
- Hanro (Cold dew - October 8)
- Sang-gang (Frost appears - October 23)
- Ipdong (The start of winter - November 7)
- Soseol (Minor snow - November 22)
- Daeseol (Heavy snow - December 7)
- Dongji (The winter solstice - December 22)
- Sohan (Mild cold - January 6)
- Daehan (Midwinter - January 20)
- Each pillar has eight sides.
- There are eight pillars on each of the southeast and northwest faces of the building.
- There are six pillars on each of the northeast and southwest faces of the building.