Citania de Briteiros is an archaeological site located in northern Portugal, near the town of Guimarães. It dates back to the Iron Age and is believed to have been a settlement of the Celtic people. The site features well-preserved structures, including houses, walls, and a unique circular layout, which provide insights into the social and economic life of its inhabitants. Excavations at Citania de Briteiros have revealed various artifacts, such as pottery, tools, and jewelry, which help researchers understand the culture and daily activities of the people who lived there. The site is an important example of ancient Celtic civilization and is recognized for its historical significance.