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Quantum tech reveals hidden tunnel beneath Lisbon's streets
Archaeologists have discovered an underground tunnel beneath Rua Augusta in Lisbon, buried during the earthquake of 1755.
U.S. News & World Report6d
Lisbon Neighborhoods
Lisbon is a hilly place ... While many consider it overrun by tourists, Baixa's pedestrian-only Rua Augusta is still one of the city's main shopping streets. Other streets in Baixa are named ...