1) Paris Charles de Gaulle Airport complex, France
2) Los Angeles International Airport complex, California
3) Changi Airport complex, Singapore
4) Hartsfield-Jackson Atlanta International Airport complex, Georgia
Explanation:
The world’s tallest indoor waterfall, 131-foot-tall, opened for the general public at Singapore’s Jewel Changi Airport.The waterfall is housed inside a dome-shaped complex which has gardens growing over four storeys, more than 280 retail and food outlets, a hotel and a movie theatre. The structure also has a botanical garden with 120 species of plants.