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. Credit: AP ...

SPOKANE, WA - It’s almost time to celebrate the 50th anniversary of Expo '74. In 1974, Spokane became the smallest city to host the world’s fair.