The Century 21 Exposition was a world's fair held in Seattle, Washington, from April 21 to October 21, 1962. It celebrated the 100th anniversary of the city and showcased advancements in technology, culture, and architecture. The theme of the exposition was "Living in the Space Age," reflecting the excitement of the era's space exploration. The event featured the iconic Space Needle, which became a symbol of Seattle. Visitors experienced various exhibits, including innovations in science and industry, as well as cultural displays from around the world. The exposition attracted over 2.3 million attendees, leaving a lasting impact on the city’s development.