The '138' in the tower's name is a pun on the Japanese reading of the numbers 'ichi-san-hachi', which sounds like the city name 'Ichinomiya'.
The twin parabolic arches are designed to symbolize the growth and development of the region in the 21st century.
The park is one of the multiple sites within the Kiso Sansen National Government Park, the largest national government park in Japan by total area.
The site hosts significant winter illumination events that utilize the tower as a central light feature.
The observation deck is positioned at a height of 100 meters, allowing for visibility across three prefectures: Aichi, Gifu, and Mie.
The tower's design includes a specific seismic resistance structure capable of withstanding large-scale regional earthquakes.
Kiso Sansen Park 138 Tower National Park is defined by the Twin Arch 138, a 138-meter-tall observation tower featuring two distinctive parabolic arches. The park is situated along the banks of the Kiso River and serves as a major recreational hub within the Kiso Sansen National Government Park network. The observation deck provides 360-degree views of the Nobi Plain, including Mt. Ibuki and the Nagoya skyline. The sprawling grounds feature expansive flower gardens, a large lawn area, and play equipment for children. The park is centrally managed to maintain seasonal botanical displays. It covers a vast riverside area designed for both leisure and natural observation.
The base of the Twin Arch 138 looking upward, or from the center of the flower garden looking toward the tower.
Visit during the winter illumination season to see the park illuminated after dusk.
Bring a picnic mat to utilize the wide-open grassy areas during spring or autumn.
Check the official website for blooming calendars before your visit, as seasonal flower displays change throughout the year.
Do not attempt to walk from the nearest train stations, as the distance is significant and public transit connections are required.
The park and tower are typically closed on the second Monday of each month, excluding public holidays, and for a short period during the New Year holiday season.
Maintain noise levels near the flower beds, adhere to designated smoking areas, and refrain from using drones within the park grounds.
