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Art meets science at Leiden’s week-long festival that’ll make your brain tingle

Ever wondered what happens when you throw art and science together? Magic. The Days of Art&Science festival is returning to Leiden from September 15 to 21, 2025, promising a week of mind-bending events that’ll make you question everything you thought you knew about creativity and discovery.
This annual celebration brings together artists, scientists, philosophers, and curious minds for seven days of exhibitions, workshops, conferences, and performances across Leiden.
You can watch robots learn, explore the ethics of lab-grown meat, or let your kids loose with actual university researchers. 🔬
The festival spans multiple venues throughout the city, from Leiden University’s historic Academy Building to the tranquil Hortus botanicus, ensuring there’s something for every type of curious soul.
What’s on offer?
💡 Night of Discoveries (September 20): The festival’s flagship event transforms university buildings into interactive wonderlands where you can explore everything from astronomy to botany after dark.
👧 Brave Young Minds (September 21): A mini-festival designed for kids, where little scientists can experiment with installations guided by actual Leiden University researchers.
🎼 Wavelength Festival (September 18): An exploration of how sound and science intersect, which is perfect for anyone who’s ever wondered about the physics of their favourite tune.
🤯 The Age of Deception (September 20): An interactive event that’ll have you questioning the information you receive.
🌎 Brave New World Conference (September 18): A deep dive into what the future holds and how it might affect your work and life
The programme also features art installations like “Androids” and “Reinforced Learning” that challenge our assumptions about AI and robotics, plus philosophical discussions about creativity in the age of artificial intelligence.
📅 When: September 15 to 21, 2025
📍 Where: Various venues across Leiden
💸 Cost: Varies by event, but you can check individual listings for pricing
Ready to expand your mind and question everything you thought you knew about art and science? You can check out the full programme and secure tickets here.
