There is a representative Cenozoic volcanic island in Republic of Korea with a variety of geological heritages that are distinct from the mainland. Visitor can observe the geology and topography related to the volcano and the coastal topography at the same time. There are 23 geosites including Ulleungdo Seonginbong virgin forest, Albong double volcano, and Dokdo.

Jeju Island has a unique geological environment worldwide due to the important topographical phenomena and secondary formations resulting from volcanic activity, and was the first in Korea to be designated as a UNESCO Global Geopark.

Busan Geopark is a unique urban geopark that retains the distinctive charm and geological history of Busan, a maritime city encompassing the sea, mountains, and river estuarine. It features 12 geosites, including Nakdong River Estuary, Taejongdae, Oryukdo, Igidae, and Orvicular gabbro

Cheongsong Geopark, where 'nature, geology, tradition, and culture' converge, is a place where one can experience the coexistence of humans and nature. Primarily formed by volcanic eruptions, it features volcanic breccia and sedimentary rocks at formations like Giamdane, Gugo-sang Yumunam (Flower Stone), and Sinseong-ri Dinosaur Footprints among its 24 geological sites. It is the second UNESCO Global Geopark in Republic of Korea.

Gangwon Peace Area Geopark was established to embody the fundamental principles of geoparks in promoting peace in the adjacent area of the Central Demilitarized Zone (DMZ) of the Korean Peninsula. It features 16 geological sites in the regions of Hwacheon, Yanggu, Inje, and Gosung, showcasing Cambrian metamorphic rocks and Mesozoic volcanic rocks.

Based on the common geological heritage of Mudeungsan in Gwangju, Damyang, and Hwasun, this UNESCO Global Geopark features 23 scientifically valuable geological sites. Highlights include the Mudeungsan Tectonic Ridge, Hwasun Seoyuri Dinosaur Fossil Site, and Damyang Chuwolsan, showcasing unique historical, cultural, and ecological heritages.

Hantan River National Geopark, with 24 geological sites ranging from the Cambrian to the Cenozoic era, features metamorphic rocks, granite, and basalt. It is the only geopark in Republic of Korea themed around a river and the fourth UNESCO Global Geopark in the country. The park includes landscapes such as river erosion features like cliff retreats and geological formations like columnar joints in basalt gorges.

Located in Taebaek City, Yeongwol County, Pyeongchang County, and Jeongseon County, this area showcases representative Paleozoic sedimentary rocks in Republic of Korea. It is known for its exceptional river and karst landscapes, featuring 21 geological sites including Gunmunso, Donggang, and Baekryong Cave.

Donghaean Gyeongbuk Geopark is an area of diverse geological and geomorphological phenomena in an area with abundant metamorphic rocks, including volcanic activities, the uplift of the East Coast, and basin formations related to the development of the East Sea. There are the 19 representative geological attractions such as Yangnam Columnar Joints, Guryongso pothole, and Yeongdeok unconformity.

The number of geological sites is 32 in the Geopark, making it the fifth UNESCO Global Geopark in Republic of Korea. Thirteen are located at Gochang-gun, and nineteen at Buan-gun. These 32 geological sites mainly consist of deformed structures of volcanic-sedimentary rocks and have rich cultural, historical, and ecological resourcesincluding the breathtaking views of Seonunsan Provincial Park and Byeonsan Peninsula NationalPark in the Gochang-Buan area, dolmen ruins, and biosphere reserves.

Baengnyeong·Daecheong National Geopark consists of the northernmost islands in the western part ofthe country: Baengnyeongdo Island, Daecheongdo Island, and Socheongdo Island. The islands were created by the ebb and flow of coastal tides that reformed sedimentary rocks about 1 billion years ago. There are ten representative geological attractions in this geopark, which include basaltic rocks with olivine, Republic of Korea's largest coastal dune and Stromatolites, the oldest known trace fossils in Republic of Korea.

The national geopark of Jinan·Muju, showcasing colorful and unique geological resources, holds an excellent series of geological structures formed during the Paleoproterozoic from 2.5 billion years ago to 1.6 billion years ago, together with sedimentary and volcanic processes in the Cretaceous period. The park is also famous for its other plentiful historical, cultural, and ecological resources, reflected in ten representative geological attractions, including the Mt. Maisan and Orbicular Granite Gneiss in Osan-ri.

Danyang National Geopark is the best place to study the tectonic structure of the Korean Peninsula , including many kinds of rocks, generally showing highly-developed karst topography in the limestone area. The park has 12 unique geological features, such as Gosu Cave and Dodamsambong.

Gogunsan Islands consist of outcrops of Neoproterozoic and Cretaceous sedimentary rocks and are very important area for identifying the tectonic evolution of the western part of the Korean Peninsula. In this regard, the geological park is highly valued as a resource for tourists and education, about geological formations like the Fold Structure on Maldo island, Chevron fold, volcanic breccia, dinosaur footprints, etc.

This Uiseong Geopark exhibits volcanic activities, deposition, and sedimentation as the center of the Cretaceous Mesozoic Gyeongsang Basin (the largest basin on the peninsula).

The newly created Hwaseong Geopark consists of highly heterogeneous terrains created by the reclaimed land, coastal area, islands, etc. on the western part of Hwaseong City. It houses eight significant geological attractions in Republic of Korea, such as the Fossil Site of Dinosaur Eggs in Gojeong-ri, widely appreciated as the best dinosaur egg-laying site on the Korean Peninsula, Ueumdo, an exhibition center that showcases different geological structures, Jebudo, a mysterious sea path emerging twice a day, and Gukhwado, an island with a scenically beautiful sea path to a land-tied island.