Ancient Ruins (古代文明の遺跡, Kodaibunmei no Iseki) are a series of locations in Eiyuden Chronicle: Hundred Heroes.
From time to time, these ruins are discovered throughout Allraan. While some have been unearthed by time and fallen to decay, others remain cleverly hidden and preserved. The ruins tend to be adorned with ornate runes—but their purpose, and that of the ruins themselves, remains unclear. And as the grounds are sometimes patrolled by Rune Golems, they can be a dangerous place in which to set foot.