📜 The world’s largest Hoberman Sphere is an expanding and contracting isokinetic structure, demonstrating biomimicry, located in the AHHAA Science Center in Tartu, Estonia. # Why Go ✨ Witness a hypnotic display of biomimicry. 🔬 See an innovative example of structural engineering. 👨‍👩‍👧‍👦 Engaging attraction within a science center, great for families and science enthusiasts. # Cost 💰 Adults €13, school/university students and seniors €10. # Hours 🕒 Sun-Thu 10 a.m. to 7 p.m., Fri-Sat 10 a.m. to 8 p.m.