<human>:  Why is the city of Barcelona called Barcelona?
<bot>: Barcelona is named after the Roman city of Barcino. The name comes from the Latin word barca, meaning boat. The city was founded by the Romans in the 1st century BC, and was a major port city. The city was conquered by the Visigoths in the 5th century AD, and was later conquered by the Moors in the 8th century. The city was then conquered by the Christians in the 12th century, and was later conquered by the Spanish in the 16th century.