3. Edinburgh International Science Festival
The Edinburgh International Science Festival, the next one on the list of biggest science festivals around the world was first held in 1989, and it features hundreds of talks and exhibitions in different locations across the city. The events are aimed at children, families, and adults and according to the Convention Edinburgh, with over 90,000 visitors this is one of the largest science festivals in Europe. The festival lasts for two weeks and aims to inspire people to explore the world by providing them with innovative events.
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