遗址 (yí zhǐ) literally means 'left-behind site' — 遗 (yí) means 'to leave behind, to remain', and 址 (zhǐ) means 'site, location, or foundation'. Together, they refer specifically to the physical remains of ancient human activity — such as foundations of buildings, buried tools, pottery shards, or temple ruins — uncovered through archaeological excavation. Unlike general 'ruins' (废墟), 遗址 emphasizes historical and scientific significance: it’s a formal, academic term used in archaeology, history education, and cultural heritage contexts.

This word is commonly found in museum labels, travel guides to historical destinations (e.g., the Terracotta Army site), and news reports about new discoveries. It is almost always used with modifiers like 古代 (ancient), 重要 (important), or 国家级 (national-level) to specify age or status. While it can describe any era from Neolithic to imperial times, it excludes natural formations or recent abandoned structures — those would not qualify as 遗址 without evidence of past human occupation or use.