Roman forum, Tongobriga, Portugal(Courtesy Jason Urbanus)
The small hilltop village of Freixo, Portugal, is an unassuming place. A single-lane stone-paved road runs through the heart of the settlement, where a dozen or so buildings spread out from a quaint church square. It is hard to imagine that 1,800 years ago, this was the location of Tongobriga, one of the largest Roman towns in northern Portugal, whose ancient population of 2,500 dwarfs the tiny number of residents today.
Iron Age ba