Short answers, pulled from the story.
Jewel Changi Airport opened its doors on the 18th of October 2019. This date marked the transformation of the transit hub into a primary destination in its own right. The project was designed to ensure Changi remained a major aviation hub in the Asia-Pacific region.
The vision originated in a 2013 National Day Rally speech by then-Prime Minister Lee Hsien Loong. He called for doubling the airport's capacity by the mid-2020s and creating new opportunities for Singaporeans. The project required no government funds or taxpayer money.
The Forest Valley is an indoor garden spanning five stories and covering an area of 14,000 square meters. This space houses approximately 3,000 trees and 60,000 shrubs representing 120 species from high-altitude tropical forests around the world. The landscape architecture was led by PWP Landscape Architecture.
The Rain Vortex is the world's tallest indoor waterfall standing at 46 meters high. Water is pumped to the roof and freefalls through a round hole at a rate of up to 14,000 liters per minute into a basement-level pool. The design was engineered by WET Design.
The Canopy Park features a 128-meter long Mastercard Canopy Bridge located 23 meters above the ground. The park also consists of the Hedge Maze, the Mirror Maze, the Bouncing Net, the Discovery Slides, and Foggy Bowls. These attractions are hosted on the topmost level of the complex.