The ancient city of Iksan in Korea may have been the capital of the Baekje Kingdom. Researchers found relics like royal palaces and temples, but some experts doubt it was the capital because there's no evidence of a city or fortress wall to protect it. To prove Iksan was the capital, they studied recent excavations and past research. They discovered clues suggesting there was a city and a palace fortress wall in Iksan during the last years of the Baekje Kingdom.