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Was Seoul really the capital of the ancient Korean kingdom of Baekje? This question sparks curiosity among history lovers and modern residents alike. The answer lies in the fascinating history of Hanseong, an early name for the region that would later become today’s dynamic metropolis. In this post, we’ll explore the truth behind this historical connection, uncover archaeological evidence, and reveal why understanding Hanseong’s past enriches our perspective on Seoul’s remarkable story.
Baekje (백제) was one of the Three Kingdoms of Korea, alongside Goguryeo and Silla. Founded in 18 BCE by Onjo, a son of King Dongmyeong of Goguryeo, Baekje quickly established itself as a powerful kingdom in the Korean Peninsula and a cultural bridge with China and Japan.
Initially, Baekje’s political and cultural center was located along the Han River basin—an area rich in natural resources and strategically significant. The kingdom underwent several capital relocations over its history, but Hanseong, corresponding roughly to modern-day Seoul, served as its first capital.
Solving for both security and economic growth, the Han River provided ideal trade routes and fertile lands, making Hanseong a natural choice.
Hanseong, known historically as Wiryeseong (위례성), was the first capital of Baekje. Established around 18 BCE, it remained the seat of power for roughly four centuries until 475 CE when Goguryeo forces captured the city.
During this period, Hanseong flourished as a political, economic, and cultural hub. Baekje kings promoted advanced craftsmanship, Buddhism, and international diplomacy from this capital. Artifacts such as gilt-bronze incense burners and stone pagodas reflect a high level of cultural sophistication.
Imagine walking through the bustling markets of Hanseong, hearing merchants exchange goods from China and Japan—a scene that underscores its importance in East Asian trade networks.
Modern archaeological discoveries have provided tangible evidence of Hanseong’s role as Baekje’s first capital. Excavations at the Pungnap Toseong (풍납토성) and Mongchon Toseong (몽촌토성) earthen fortresses in southern Seoul have revealed defensive structures, residential remains, and valuable artifacts.
These findings confirm that the area supported a large, complex society. The fortresses, with their massive walls and strategic layouts, reflect an advanced understanding of urban planning and military architecture.
Personally, when I visited Pungnap Toseong, I was struck by the sheer scale of the ancient walls—standing there, it was easy to picture the grandeur of early Baekje civilization.
Understanding Hanseong’s role helps illuminate Seoul’s deep historical roots. The choice of this site as Baekje’s capital foreshadowed its enduring strategic value, which later dynasties like Goryeo and Joseon also recognized.
The Han River remains the lifeblood of Seoul, much as it was for Hanseong. Many neighborhoods in modern Seoul—such as Songpa and Gangdong—overlap with ancient Baekje territory. Local festivals and museums celebrate this rich heritage.
Solving the puzzle of Seoul’s resilience and dynamism involves appreciating how geography, culture, and history have interacted over millennia—starting with Hanseong.
Revisiting Hanseong’s legacy is not just about honoring the past—it enriches our understanding of identity and continuity in Korean society.
In an era of rapid globalization and urban change, knowing that Seoul’s story spans over two millennia fosters a sense of place and pride. It also reminds us of Korea’s longstanding role in regional and global exchanges—a tradition that continues today in technology, culture, and diplomacy.
Solving modern identity questions benefits from anchoring ourselves in this deeper historical context.
If you’re visiting Seoul and want to explore its ancient Baekje roots, several key sites await:
These sites provide a tangible connection to Hanseong’s past and are well worth exploring whether you’re a tourist or a lifelong Seoulite.
One common misconception is that Seoul, as we know it today, was continuously inhabited as a capital since Baekje times. In reality, after Hanseong’s fall, Baekje relocated its capital to Ungjin (modern Gongju) and later to Sabi (modern Buyeo).
Another myth is that Hanseong’s location perfectly matches present-day downtown Seoul. In truth, Hanseong centered more around southeastern Seoul, particularly Songpa District.
Understanding these nuances helps paint a more accurate and fascinating picture of how ancient and modern layers coexist in Seoul.
Did you know that Pungnap Toseong, one of Hanseong’s main fortresses, covers an area of nearly 400,000 square meters? That’s roughly equivalent to 70 football fields! Its enormous earthen walls—once standing 10 meters tall—reflect the ambition and engineering prowess of early Baekje civilization. Modern excavations continue to yield new discoveries, helping historians piece together a fuller picture of life in Hanseong. Exploring these sites offers a unique window into Seoul’s ancient soul, hidden beneath its ultra-modern skyline.
No, while Hanseong occupied parts of what is now southeastern Seoul, the city’s footprint and structures have changed dramatically over centuries. Today’s Seoul encompasses a much larger and more complex urban area.
In 475 CE, Goguryeo forces captured Hanseong, forcing Baekje’s court to relocate to Ungjin (Gongju) for security reasons. The loss marked a major turning point in Baekje’s history but also led to cultural innovations in its new capitals.
Excavations at Pungnap Toseong and Mongchon Toseong have uncovered fortifications, residential remains, pottery, and artifacts that confirm a highly organized and wealthy urban center consistent with a capital city.
Yes! Sites like Pungnap Toseong, Mongchon Toseong, and the Seoul Baekje Museum are open to the public. They offer a fascinating blend of ancient history and modern interpretation through exhibits and guided tours.
Hanseong’s strategic location by the Han River set the foundation for Seoul’s enduring importance. Its cultural and economic legacy lives on in local heritage, museum programs, and the continued celebration of Baekje’s contributions to Korean identity.