Here are some vintage photos I'm actually in. If I'm considering "vintage" to be anything before 1993 (25 years or more), then this qualifies, and it's a pretty cool event.

According to Wikipedia,

The 1982 World's Fair, formally known as the Knoxville International Energy Exposition, was held in Knoxville, Tennessee, United States. The specialized Expo themed "Energy Turns the World", was recognized by the Bureau International des Expositions (BIE).
It opened on May 1, 1982, and closed on October 31, 1982, after receiving over 11 million visitors. Participating nations included Australia, Belgium, Canada, China, Denmark, Egypt, France, Greece, Hungary, Italy, Japan, Luxembourg, Mexico, the Netherlands, Panama, Peru, the Philippines, Saudi Arabia, South Korea, the United Kingdom, the United States, and West Germany.
The fair was constructed on a 70-acre (280,000 m2) site between downtown Knoxville and the University of Tennessee. The core of the site primarily consisted of a deteriorating Louisville and Nashville Railroad yard and depot. The railroad yard was demolished, with the exception of a single rail line, and the depot was renovated into a restaurant. The Sunsphere, a 266-foot (81 m) steel tower topped with a five-story gold globe, was built for the 1982 World's Fair. It still stands and remains a symbol for the city of Knoxville.

This event marks probably one of my very first memories.

^{Me & my sister, ages 3 & 8.}

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