Lisbon is known for its rich history, which dates back to pre-Roman times. The city has survived several conquests, including the Moors' occupation of the city for eight centuries. In the 15th and 16th centuries, Lisbon played a key role in the Age of Discovery, when Portugal became a global superpower with trade routes reaching as far as India, China and Brazil. In 1755, the city was devastated by a severe earthquake, which led to significant reconstruction efforts and gave rise to the Lisbon of today.