While searching for something else I came across this: https://www.guinnessworldrecords.com/world-records/largest-acrylic-panel/ Apparently a resort including a new zoo and aquarium called Fujian Tianzhushan Happy World opened in Zhangzhou, Fujian last year. It includes whale sharks behind the world's largest aquarium window. Fujian Tianzhu Mountain Happy World | The Rough Guide to China It sounds absolutely awful, but unfortunately I will be passing so close to it in February that I might have to visit.