The House of Barcelona refers to the royal family and historical lineage associated with the city of Barcelona in Catalonia, Spain. It is often linked to the Counts of Barcelona, who played a significant role in the region's history during the Middle Ages. The house is known for its influence in the formation of the Crown of Aragon and its contributions to the political landscape of the Iberian Peninsula. Throughout history, the House of Barcelona has produced notable figures, including King James I of Aragon, who expanded the kingdom's territories. The legacy of this house is evident in the cultural and architectural heritage of Barcelona, with landmarks like the Gothic Quarter reflecting its historical significance.