Indeed, the Thames barrier is impressive, on wikipedia they got some great pictures.
https://upload.wikimedia.org/wikipedia/c...133831.jpg
But I'm not sure if using human as counterweight to rotate the wheels was a good idea ➤ https://upload.wikimedia.org/wikipedia/c...on.arp.jpg
https://upload.wikimedia.org/wikipedia/c...133831.jpg
But I'm not sure if using human as counterweight to rotate the wheels was a good idea ➤ https://upload.wikimedia.org/wikipedia/c...on.arp.jpg