Claim: The biggest city in Portugal is Lisbon.
Evidence: Lisbon -LRB- -LSB- ˈlɪzbən -RSB- Lisboa , -LSB- liʒˈβoɐ -RSB- -RRB- is the capital and the largest city of Portugal , with a population of 552,700 within its administrative limits in an area of 100.05 km ².