The Nagoya City Subway is a rapid transit system serving the city of Nagoya, Japan. It consists of six lines that cover a total of approximately 100 kilometers, making it one of the largest subway systems in the country. The subway connects key areas of the city, including business districts, shopping centers, and cultural sites. Opened in 1957, the Nagoya City Subway operates over 100 stations, providing efficient transportation for both residents and visitors. The system is known for its punctuality, cleanliness, and safety, making it a popular choice for commuting and exploring the city.