The Rain Vortex Jewel is a stunning indoor waterfall and centerpiece of the Jewel Changi Airport, located in Singapore. The waterfall is the world's tallest indoor waterfall, standing at 40 meters high and surrounded by lush greenery and gardens.

The Rain Vortex is made up of 10,000 gallons of rainwater that is collected and recycled from the Jewel's roof. The water is pumped to the top of the waterfall, and then cascades down through the oculus at the center of the Jewel's roof, creating a breathtaking display of water and light.

Visitors can view the Rain Vortex from different levels and perspectives, and there are also light and sound shows that take place at night, making it a popular attraction for tourists and locals alike.