Belgium has one of the most extensive public transportation networks in Europe. Trains, buses, trams, and metro systems provide efficient travel throughout the country. Belgium has metro systems in two cities: Brussels and Charleroi. The Brussels Metro is the country's largest rapid transit network, serving the capital and its suburbs, while the Charleroi Metro operates as a light metro system in the Walloon region. Together with Belgium's dense railway network, these systems offer convenient and reliable urban transportation.