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◆ Geography · Landmarks & Wonders

The Seattle World's Fair opened, debuting the Space Needle

On this day · 21 April 1962
40 sec read

The Century 21 Exposition threw open its gates on April 21, 1962, unveiling a 605-foot tower built to imagine life in the new century.

Verified · Seattle Municipal Archives — The City of Seattle and the 1962 World's Fair

At 11 a.m. on April 21, 1962, the Century 21 Exposition opened in Seattle to a roar of 538 bells, 2,000 balloons, and Air Force jets streaking overhead. President Kennedy, vacationing in Florida, pressed a telegraph key to launch the fair from afar.

The centerpiece was the brand-new Space Needle, a flying-saucer-topped tower rising 605 feet, its observation deck and rotating restaurant reachable by elevator in under a minute. Built for the fair on a space-age theme, it instantly became the symbol of the city.

Over its six-month run, the fair drew nearly 10 million visitors before closing on October 21, 1962.

Unusually for a world’s fair, Seattle turned a modest profit and kept its grounds. The site became the Seattle Center, and the Space Needle still presides over the skyline more than sixty years on.

605 ft
Space Needle height
10M
visitors
184
days open

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 Seattle Municipal Archives — The City of Seattle and the 1962 World's Fair government archive “One silent home movie by an unknown creator, donated to the City of Seattle, records the opening ceremony on April 21, 1962.” seattle.gov ↗
2 Space Needle — About institution / landmark operator “since its grand opening on April 21, 1962, continues to represent the innovative... The Space Needle officially opened the first day of the World's Fair.” spaceneedle.com ↗
✓ Last reviewed Jun 7, 2026

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