"The Queen Emma Bridge (Dutch: Koningin Emmabrug; Papiamento: Brùg di Ponton, Brùg di Punda) is a pontoon bridge across St. Anna Bay in Curaçao. It connects the Punda and Otrobanda quarters of the capital city, Willemstad. It was named after Emma of Waldeck and Pyrmont, who was queen consort of the Netherlands during its construction. The bridge is hinged and opens regularly to enable the passage of oceangoing vessels. On the opposite end from the hinge is a small shelter where an operator controls two diesel engines turning propellers. The propellers are mounted perpendicular to the length of the bridge and allow it to swing parallel to the shore. The process only takes a few minutes to complete."
Via Wikipedia
https://en.wikipedia.org/wiki/Queen_E...

I was happy to get to see the bridge close and be used, it really was fascinating to watch.