Tucked away in Kosong County, Kangwon Province, Lagoon Samil is a breathtaking lake with a history as fascinating as its scenery. Spanning 0.78 square kilometers, it stretches 2 kilometers in length and 400 meters in width, with a total perimeter of 6.5 kilometers. What makes it special is that it wasn’t always a lake – centuries ago, it was a small bay connected to the East Sea of Korea. Over time, sand and sediment from the Nam River estuary gradually extended into the sea, sealing off the bay and giving birth to what is now one of Korea’s most famous coastal lagoons.
Among the country’s many lagoons, Lagoon Samil is the deepest, and for generations, it has been celebrated as a place of exceptional beauty. According to legend, an ancient king once visited with plans to stay for just a day. However, he was so enchanted by the stunning landscape that he ended up staying three days instead – hence the name Samil, meaning in Korean (삼일) “three days.”
The lagoon is famous for its almost fairy-tale-like scenery. Dozens of rocky peaks surround the water like a natural fortress, while the surface remains calm and crystal clear, reflecting the sky like a giant mirror. Floating islands, lush pine forests, and thick bamboo groves come together in perfect harmony, creating a landscape so picturesque it feels like stepping into a painting.
One of the most fascinating aspects of Lagoon Samil is how it transforms depending on where you stand. From the mountain peaks, it appears to be a lake by the sea, but when viewed from within, it feels like a hidden paradise deep in the mountains – almost as if nature itself is playing a trick on the eyes.
The lagoon’s largest island is called Wau-do. It was once known as Song-do due to the ancient pine trees growing there. However, locals noticed that the island’s shape looked remarkably like an ox lying down, leading to its current name, which translates to “Ox Island.”
Today, Lagoon Samil is a beloved retreat, attracting visitors who come to enjoy its tranquility and natural beauty. Whether wandering along its shores, taking in the views from the mountains, or simply admiring its calm waters, it’s easy to understand why a king once couldn’t bring himself to leave. Some places just have that kind of magic.
