What’s “Sampo” (Take a Walk) SPIRAL SLOPE

The SPIRAL SLOPE spans 9 levels as a continuous spiraling walkway that you can stroll up and down between the observation deck and the 1F by taking a walk on the east side of this tower. The walking distance from top to bottom is about 450m. The view changes as you walk so that you can enjoy the stroll relishing the expansive views. (Elevator is also available between the 13F and 1F.) At the center of the SPIRAL SLOPE, you will find the spiral slide ”cool-cool-cool” which is sure to entertain the whole way down. The entire length of the slope is also adorned on its west side with an original manga exhibition created by a famous Japanese comic artist, which is only available at HIROSHIMA ORIZURU TOWER.

Slope connects the observation deck to the 1F, visible here to the left of the ORIZURU WALL.

Special area where one can enjoy the warmth and breadth of the wooden architecture, as you stroll between floors.

Exciting Slide

Slide “cool-cool-cool”

In the center of the SPIRAL SLOPE, there is a spiral slide which is about 70m long.

This slide is a popular spot where everyone, from children to adults, can enjoy sliding around and around. (The slide runs continuously from the 12F to the 1F, but exiting is possible at each floor.) Use the “slide sheet” and feel the speed, sure to be an exciting experience. “Slide sheets” are only for the slide and available in two sizes, for both adults and children. The adult-sized sheets also offer the possibility of riding in pairs. After enjoying at the observation deck and 12F ORIZURU SQUARE, let’s try Slide ”cool-cool-cool”!

Regarding Use of the Slide
  • The “slide sheets” are at the 12F ORIZURU SQUARE and free to use.
  • Please review the safety information before using the slide.
  • Children should be accompanied by an adult. Please be careful of those around you.
  • Please wear the helmet and protectors when using the slide, especially children.
  • HIROSHIMA ORIZURU TOWER shall not bear any responsibility regarding injuries, or any other problem that may occur during use.


Exhibited along the “Sampo” SPIRAL SLOPE is an original work centered around the concept of “Peace” examined in the context of postwar Hiroshima, up through the present.

The author is Shuho Sato, a famous Japanese manga artist who has produced many celebrated works. This particular exhibition details snapshots of daily life and typical scenes in Hiroshima through the passage of time. Please take your time and enjoy this special work, available exclusively at the SPIRAL SLOPE.

Artist Introduction

Manga artist

Shuho Sato


Born in Obihiro City in Hokkaido in 1973. His masterpieces include “UMIZARU”, “Say Hello to Black Jack”, and “The Isle of Tokkou”. In 2010, he founded "Manga on Web", the first online e-book store that is run by a manga artist. He offers the secondary use of his work “Say Hello to Black Jack” for free, and has worked very hard on the issues surrounding the secondary use and copyrights of manga works in the Internet Era. In 2015, he launched the Web journal Manga on Web. He also offers the "Densho-bato (e-book carrier pigeon)" service, through which he allows manga artists to sell their works (e-books) on the Internet.