Iiyama is a city located in Nagano Prefecture, Japan. As of 1 February 2019, the city had an estimated population of 20,118 in 7372 households, and a population density of 99 persons per km2. The total area of the city is 202.43 square kilometres (78.16 sq mi). It markets itself as "Japan's Hometown" and is known as the "Little Kyoto of Snow Country".

Myōkō is a city located in Niigata Prefecture, Japan. As of 1 November 2020, the city had an estimated population of 31,374 in 12,408 households, and a population density of 70 people per km². The total area of the city was 445.63 square kilometres (172.06 sq mi). Myōkō is a member of the World Health Organization’s Alliance for Healthy Cities (AFHC).