Shimonoseki City is one of the central cities in Yamaguchi Prefecture, and its population exceeds that of Yamaguchi City. It also boasts a vibrant economy, with many businesses operating from Shimonoseki City. The city is also adjacent to Kitakyushu City in Fukuoka Prefecture across the sea, providing strong ties with both areas. Furthermore, Shimonoseki City plays an important role as a transportation hub. The city also once developed as a port town, and traces of this can be seen in the city's economy. Tourist attractions in the city include the Shimonoseki Aquarium Kaikyokan, Karato Market, and Hicotto Land Marine Beach, further contributing to the city's growing demand as a tourist destination.