Seosan-si is one of 16 cities, counties and districts in Chungcheongnam-do. It has 15 neighborhoods (5 dong · 1 eup · 9 myeon) and 170,634 registered residents (September 2026). The most populous neighborhood is Seongnam-dong with 34,208.
15neighborhoods
170,634residents
Landmark stamp: Haemieupseong Fortress
Located in Seosan, this well-preserved Joseon stone fortress retains its defensive gatehouses, expansive grassy lawns, and historical buildings reflecting regional military history.
History
Constructed during the early Joseon period to repel coastal invaders, this sturdy stone fortress safeguarded the surrounding regional community.
What to see
Visitors can admire the preserved southern gate standing tall beyond expansive grassy lawns alongside an ancient historic pagoda tree.
Visitor tip
Trying hands-on traditional folk activities like flying colorful kites or playing arrow-throwing games on the wide lawns is enjoyable.
Food, festivals and stories of Seosan-si
Local food
Spicy pickled oysters harvested from tidal flats and pungent six-clove Seosan garlic are two celebrated local gastronomic delicacies.
Festivals
Held inside the well-preserved Joseon fortification, the Seosan Haemi Fortress Festival invites visitors to experience traditional military life and folk culture.
Did you know?
Seosan is home to the Rock-carved Triad Buddha, widely known as the Smile of Baekje for its warm and serene expression.
Neighborhoods of Seosan-si (15)
Every neighborhood has its own stamp in Random Passport. Tap “Land here” to fly straight to one.
Daesan-eup대산읍eup · 11,790 residents
Story: Traditions tell of islanders gathering atop Hwanggeumsan to offer village rituals to the sea dragon god for abundant catches.
Photo spot: You can take scenic photos against the backdrop of the ocean and the famous Elephant Rock on Hwanggeumsan's pebble beach.
Food: At Samgilpo Port's floating market, you can enjoy freshly sliced rockfish sashimi directly from fishing boats anchored along the pier.
Story: Local folklore playfully recounts how the smallest ninth peak wept after being left out when naming the eight peaks of Palbongsan.
Food: Famous for potatoes grown in mineral-rich red clay soil and ocean breezes, the town celebrates its harvest every summer.
Photo spot: Hiking along the rocky ridges of Palbongsan rewards visitors with scenic panoramic views overlooking the serene tidal flats of Garorimman Bay.
Story: Master painter An Gyeon famously brought Prince Anpyeong's wondrous dream to life by painting the renowned Dream Journey to the Peach Blossom Land.
Food: Fragrant green gamtae seaweed harvested during winter from the pristine mudflats of Garorimman Bay is a prized local specialty.
Name: The name Seongyeon expresses a historic wish for virtuous prosperity, visualizing graceful swallows swooping into a peaceful, thriving homeland.
Photo spot: Walking along the landscaped pathway of Seongyeoncheon Stream provides great vantage points to capture pretty seasonal blossoms beside gentle waters.
Fun fact: Modern industrial complexes and comfortable residential neighborhoods have transformed this locale into a lively community buzzing with youthful energy.
Story: The birth house of Queen Jeongsun, consort of King Yeongjo, still stands here, preserving historic tales from the late Joseon royal court.
Photo spot: During spring, a sea of bright yellow daffodils carpets the pine groves behind historical Yu Gi-bang House, creating unforgettable photo settings.
Story: When sunlight touches the rock-carved Buddha triad of Yonghyeon-ri, the tranquil Baekje smile appears to change subtly throughout the day.
Photo spot: Climbing the stone stairs of Gaesimsa Temple in springtime treats visitors to splendid displays of lush king cherry and rare greenish blossoms.
Fun fact: Historic stone relics including a massive granite water basin and a five-story pagoda mark the expansive grounds of ancient Bowonsa Temple.
Story: The historic pagoda tree within the fortress grounds preserves solemn memories of Catholic martyrs who persevered during harsh Joseon persecutions.
Photo spot: Walking atop the stone fortress walls of Haemieupseong provides scenic viewpoints to photograph peaceful gardens and open sky above the citadel.
Fun fact: Haemieupseong Fortress preserves authentic Joseon defensive ramparts, having once served as a primary military stronghold along the western coastline.
Photo spot: Colorful chrysanthemums blanket the scenic fields of Gagu-ri every autumn, turning the Seosan Chrysanthemum Festival into a picturesque photo haven.
Food: Grown in fertile red clay and nurtured by ocean winds, local altari radishes are renowned for their irresistibly crisp, juicy bite.
Story: Situated quietly along the mountain slope, Dangunjeon Shrine holds annual ancestral rites honoring Dangun, the mythological progenitor of the Korean nation.
Photo spot: Ascending the observatory tower on Buchunsan Mountain rewards photographers with panoramic vistas spanning city avenues and distant shimmering coastlines.
Story: Built during King Taejong's reign, Seosan Hyanggyo still tells enduring stories of young scholars studying Confucian scriptures under towering ancient trees.
Fun fact: Historic granite flagpole supports dating from the Goryeo period still remain where ancient Bohyeonsa Temple once stood east of the citadel.
Name: The neighborhood took its name from the historical location where the eastern gate of the old town fortress once stood.
Food: Visitors exploring Seosan Dongbu Traditional Market can taste freshly steamed ramie rice cakes and crispy fried chicken straight from large cauldrons.
Photo spot: Capturing glittering seafood stalls brimming with fresh coastal catches inside the market alleyways produces dynamic and colorful photographic memories.
Name: The name was formed by combining characters from ancient villages that were celebrated for crystalline waters and wondrous rock formations.
Photo spot: Walking along the perimeter trail around quiet Jamhong Reservoir provides scenic opportunities to capture warm sunset reflections upon gentle waters.
Photo spot: The musical fountain and decorative bridge in Central Lake Park create captivating focal points for taking brilliant photos against the evening waters.
Fun fact: A scenic lakeside trail and outdoor sculptures encircle the wide lake, providing a cherished green sanctuary for local citizens.
Local notes were drafted with the help of AI from public information. Population: Ministry of the Interior and Safety resident registration, September 2026. Spotted a mistake? Tell us.