The Nankai Main Line is a railway line in Japan that connects Osaka to Wakayama. Operated by the Nankai Electric Railway, it serves as a vital transportation route for commuters and tourists traveling between these two cities. The line features both local and express services, making it convenient for various travel needs. The Nankai Main Line is known for its scenic views, especially as it approaches the coastal areas of Wakayama. It also provides access to popular destinations such as Koyasan, a UNESCO World Heritage site, attracting many visitors each year.