Image: An early rendering of the Serdika station in Sofia, Bulgaria, displaying Roman ruins on the first level underneath the street. During the planning stages for the Sofia Metro in Bulgaria, ruins of an old Roman fortress and city wall were discovered at the network’s proposed Serdika station. This wasn’t a surprise. People have been living in what is now Sofia for at least 4,000 years, and when you dig a tunnel, you’re bound to find something.   The agendas of archaeologists and metro builders are often contradictory. Metro builders want to proceed quickly, while archaeological examination can be extremely time consuming. After the construction finished, however, Serdika station resolved these differences into a museum-metro station hybrid. Serdika station is just one example of this museum-metro station hybrid. Metro systems in cities like Mexico City, Istanbul, and Rome have stations featuring artifacts unearthed during their construction. Museum Archipelago tries to make sense of these museum-like spaces.Links:Problems of Cultural Monuments' Preservation Connected with the Construction of the Sofia Underground MISC | Archaeology & Subways