The Osaka Expo 2025 has opened in Japan. People from many countries will visit the Expo. It ends in October. More than 28 million visitors will go to it. An Expo is an event that brings together people from all over the world. The first one took place in London in 1851. Expos try to find answers to the world's biggest problems. The Osaka Expo shows the culture, history and economy of 158 countries. The theme is "Creating a future society for our lives." At the US pavilion, people can see exhibits on space travel. The Italian pavilion has exhibits on architecture and environmental design.

The Osaka Expo is on an artificial island. The 80 pavilions are in a giant, round building called the Grand Ring. Guinness World Records said it is the world's "largest wooden architectural structure". It has a 2-kilometre circumference. A one-day ticket for adults costs about $52. Visitors can see many aspects of Japanese culture. There are exhibits on robots and flying cars, and on Hello Kitty. Visitors can also see the Expo mascot. This is a strange creature called Myaku-Myaku. It has a blue face and many red eyeballs. It is good at finding rainbows.