東急東横線
The Yokohama Subway and the Minatomirai Line also operate in the Greater Tokyo Area, but they are not directly connected to the Tokyo subway network. However, direct through services from the Tokyo Metro Fukutoshin Line regularly run into Yokohama's Minatomirai Line via the Tōkyū Tōyoko Line railway. On special occasions, typically around holidays, the Tokyo Metro Hibiya Line and Namboku Line operate special "Minatomirai" (みなとみらい号), formerly known as "Yokohama Mirai" (横浜みらい号), direct through services to the Minatomirai Line.