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A variety of uniforms, worn by “hostesses” at the World Expo held in Osaka in 1970, are displayed at the Expo ‘70 Pavilion in Osaka, Japan on April 19, 2024. (Katherine Roth via AP)

A variety of uniforms, worn by “hostesses” at the World Expo held in Osaka in 1970, are displayed at the Expo ‘70 Pavilion in Osaka, Japan on April 19, 2024. (Katherine Roth via AP)

This conceptual rendering shows an event stage area that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)

This conceptual rendering shows an event stage area that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)

Gift boxes of cakes publicizing Expo 2025, for sale at a shop in Osaka’s Itami airport on April 21, 2024. The packaging features the red-and-blue “Myaku-Myaku” mascot. (Katherine Roth via AP)

Gift boxes of cakes publicizing Expo 2025, for sale at a shop in Osaka’s Itami airport on April 21, 2024. The packaging features the red-and-blue “Myaku-Myaku” mascot. (Katherine Roth via AP)

This 2024 photo shows the Taiyo No To (Tower of the Sun) monument, appears at the site of the 1970 World Expo in Osaka, Japan. The structure, designed by artist Taro Okamoto, is open to the public. (Katherine Roth via AP)

This 2024 photo shows the Taiyo No To (Tower of the Sun) monument, appears at the site of the 1970 World Expo in Osaka, Japan. The structure, designed by artist Taro Okamoto, is open to the public. (Katherine Roth via AP)

A variety of uniforms, worn by “hostesses” at the World Expo held in Osaka in 1970, are displayed at the Expo ‘70 Pavilion in Osaka, Japan on April 19, 2024. (Katherine Roth via AP)

A variety of uniforms, worn by “hostesses” at the World Expo held in Osaka in 1970, are displayed at the Expo ‘70 Pavilion in Osaka, Japan on April 19, 2024. (Katherine Roth via AP)

FILE - Terra, The Sustainability Pavilion, appears at the Dubai World Expo site in Dubai, United Arab Emirates on Jan. 16, 2021. (AP Photo/Kamran Jebreili, File)

FILE - Terra, The Sustainability Pavilion, appears at the Dubai World Expo site in Dubai, United Arab Emirates on Jan. 16, 2021. (AP Photo/Kamran Jebreili, File)

This image released by Expo 2025 shows a view of the site of World Expo 2025 in Osaka, Japan on Sept. 8, 2024. (Expo 2025 via AP)

This image released by Expo 2025 shows a view of the site of World Expo 2025 in Osaka, Japan on Sept. 8, 2024. (Expo 2025 via AP)

FILE - A canvas decorated with a commercial for the Riyadh Expo 2030 protects a building under renovation, Tuesday, Nov. 28, 2023 in Paris. Saudi Arabia's capital Riyadh was chosen on Tuesday to host the 2030 World Expo, beating out South Korean port city Busan and Rome for an event expected to draw millions of visitors. (AP Photo/Thomas Padilla, File)

FILE - A canvas decorated with a commercial for the Riyadh Expo 2030 protects a building under renovation, Tuesday, Nov. 28, 2023 in Paris. Saudi Arabia's capital Riyadh was chosen on Tuesday to host the 2030 World Expo, beating out South Korean port city Busan and Rome for an event expected to draw millions of visitors. (AP Photo/Thomas Padilla, File)

This 2024 image shows an ad on the front of a train, publicizing the upcoming World Expo 2025, in Osaka, Japan. The ad features the red-and-blue “Myaku-Myaku” mascot. (Katherine Roth via AP)

This 2024 image shows an ad on the front of a train, publicizing the upcoming World Expo 2025, in Osaka, Japan. The ad features the red-and-blue “Myaku-Myaku” mascot. (Katherine Roth via AP)

This conceptual rendering shows the skywalk of The Grand Ring, an architectural structure that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)

This conceptual rendering shows the skywalk of The Grand Ring, an architectural structure that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)

This conceptual rendering shows The Grand Ring, an architectural structure that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)

This conceptual rendering shows The Grand Ring, an architectural structure that will be featured at the 2025 World Expo in Osaka, Japan. (Expo 2025 via AP)