• The glass dome features the world's tallest indoor waterfall at 40 metres - all of the water is harvested from rain.
  • There's also an IMAX movie theater, a supermarket, a hotel, and 280 shops and restaurants.
  • Skytrax rated Changi Airport as the World's Best Airport for the seventh year in a row. 

Singapore's Changi Airport has already snagged the title of world's best airport for 7 years running, and its newest expansion is only tightening its grip on the title.

In April 2019, Changi opened up Jewel, a lifestyle hub for the airport. The massive doughnut-shaped building sits between the control tower and Terminal 1. It took more than 4 years and R19 billion to build the glass-and-steel dome that makes up Jewel. Part luxury mall and part indoor rainforest, here's a look inside the complex making layovers more fun.

Built on what was once a parking lot, Jewel now covers 136,000 square metres. It stands 10 stories tall with five stories below ground and five above.

280 shops and restaurants circle the perimeter of the glass dome. There's a multiscreen IMAX theater, a full-sized supermarket, and a hotel. In the middle of it all is the Rain Vortex. A cascading funnel of water drops 7 stories through the core of the building. At over 40 metres high, it's the tallest indoor waterfall in the world. All the water is harvested from rain and recirculated through the waterfall 24-7. At night, it keeps running and acts as a canvas for a 360-degree light show projected on it.

Surrounding the Rain Vortex is a four-story indoor forest. Singapore is known as a City in a Garden, and the airport wanted to capture that theme at Jewel with the Shiseido Forest Valley. More than 900 trees and 60,000 shrubs from around the world make up the tiered gardens, and, of course, there are walking trails. They're open 24-7, and they run through the gardens past waterfalls. The airport suggests allowing a half hour for each trail, but maybe allow more time based on these crowds.

Don't feel like walking? The skytrain weaves through the forest as well. And just because it's still an airport, there are early-check-in kiosks and counters. But you don't actually need an airplane ticket or to go through airport security to visit Jewel. Changi designed it this way to encourage Singapore residents to wander the forest trails as well. The airport expects to see 50 to 60 million visitors to Jewel this year.

On the building's fifth level, Canopy Park, the latest addition of the airport, has just opened. The recreational area has a 50 metre-long glass-bottom bridge that will hang 23 metres off the ground

But with 65.6 million travelers passing through Changi each year and seven best in the world crowns, Jewel is, well, just that: the jewel on top of an already stacked airport. So if you've got an airplane ticket, you can get access to the four award-winning terminals past security. There's a rooftop pool. For R200 you can watch airplanes take off around you as you swim. There's also a 24-7 free cinema...mind-bending art...and lots of gardens, like the butterfly, sunflower, cactus, and orchid gardens. With all this, we're thinking we might opt for a longer layover.

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