Terrestrial globes of various sizes fill the third floor of Watanabe Kyogu Co., manufacturer of globes and astronomy education materials in Soka, Saitama Prefecture.

The space, which almost feels like a miniature galaxy, is a small museum located on the top floor of the firm's factory building.

"You can see it's actually not just a size difference. Some are colored to make it easier to identify certain countries, while others put more focus on the terrain," explained company President Miwako Watanabe, 60. "Interesting, isn't it?"