Lisbon is the capital and most populous city of Portugal, with an estimated population of 658,236 as of 2025, within its administrative limits and 3,353,000 within the metropolis, as of 2025. The city lies in the western portion of the Iberian Peninsula, on the northern shore of the River Tagus. The western portion of its metro area, the Portuguese Riviera, hosts the westernmost point of Continental Europe, culminating at Cabo da Roca.