Toronto’s former Downsview Airport is being transformed into “YZD,” a new $30 billion urban district. Set to break ground in 2026, the project will bring homes for 50,000 people and be one of the largest projects of its kind in North America #calltoearth 📸: 1. Northcrest Developments, 2. Toronto Public Library/Northcrest Developments, 3-6. Northcrest Developments, 7. Sean Gallup/Getty Images