Yes, one of the most remarkable things about Jewel Changi Airport in Singapore is that it is a public-facing complex located outside the airport's immigration area (landside). This means that anyone—locals, tourists, or passengers who have already cleared customs—can visit the facility without a flight ticket or a boarding pass. You can walk right into the massive glass dome to see the Shiseido Forest Valley and the 40-meter tall HSBC Rain Vortex, which is the world's tallest indoor waterfall. The majority of the 280+ retail and dining outlets, as well as the YOTELAIR hotel, are accessible to the general public. However, if you are a transit passenger who has not cleared immigration, you will need to "enter" Singapore (which may require a visa depending on your nationality) to visit Jewel. Conversely, the Canopy Park and certain attractions on the top level, such as the Sky Nets and the Canopy Bridge, do require a paid entry ticket, but not a flight ticket. For travelers with a long layover, Jewel offers a seamless experience with "early check-in" counters for many airlines, allowing you to drop your bags and explore the gardens and shops for hours before your flight.