@beijingchina_066: Two Dutch architects designed China's most famous tower 🇳🇱 Canton Tower, Guangzhou — Mark Hemel and Barbara Kuit won an international competition to build it. The concept came from twisting a simple shape: take two ovals, rotate one, connect them with straight lines. The curve appears by itself 🌀 No column on the tower is bent. They're all straight — the twist does the work 😳 600m of geometry 📐 #cantontower #guangzhou #china #chinatravel #architecture #design #engineering