GeoOracle #89: Seoul

10 September 2026 · City · Difficulty 2 of 5

How it opened

I stand where the peninsula's heartbeat echoes loudest, a sprawling metropolis that once peaked at ten million souls.

The five clues

  1. 01An ancient dynasty chose me as its throne in the year when Gutenberg's press was still centuries away.
  2. 02I anchor a metropolitan trinity with provinces and an international airport, ranking sixth among the world's economic powerhouses as of 2022.
  3. 03Founded in 1395, I became the capital of a unified kingdom and have shaped the cultural identity of an entire peninsula.
  4. 04The largest city in South Korea, my population has gradually ebbed from its 2014 peak, now settling around 9.6 million.
  5. 05I am the capital and largest city of South Korea, the principal city of a nation that occupies the southern half of the Korean Peninsula.

The answer

Seoul

South Korea · Asia

About this place

Founded in 1395, this sprawling capital rose to become the pulsing heart of South Korea and the entire Korean Peninsula. Once home to over 10 million residents, it emerged as the world's sixth largest metropolitan economy in 2022, rivaling only New York, Tokyo, Los Angeles, Paris, and London. Today, with a population hovering around 9.6 million, it remains a megacity of tremendous cultural, political, and economic significance.

Geography

Seoul lies in Asia and serves as the capital of South Korea, standing as the largest city on the entire Korean peninsula. It anchors a wider metropolitan region that stretches into Gyeonggi Province and Incheon, forming one continuous urban and economic zone. This surrounding area concentrates a huge share of national life, making Seoul the clear center of gravity for the country's population, administration and commerce, even as the city itself remains just one part of a much larger connected region.

History

Seoul's origins as a capital reach back to 1395, when it was established as the seat of governance for Korea. From that founding point, the city grew steadily into the political heart of the nation, eventually expanding far beyond its original boundaries. Over time this growth fed into a much broader urban region encompassing neighboring provinces, laying the groundwork for the dense, economically significant metropolitan area that surrounds Seoul today.

Notable features

By 2022 the greater Seoul metropolitan economy, spanning Seoul, Gyeonggi and Incheon, ranked as the sixth largest in the world, trailing only New York, Tokyo, Los Angeles, Paris and London. This region holds more than half of South Korea's entire population. Seoul itself had once surpassed ten million residents, though its numbers have eased since 2014, settling near 9.6 million by 2024, still making it the country's largest city by far.

Fact sheet

Country
South Korea
Continent
Asia
Coordinates
37.560, 126.990
Population
9,668,465
Founded
1395

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