Terminal 21 is a popular shopping mall located in Bangkok, Thailand. It is designed to resemble an airport terminal, with each floor themed after different cities around the world, such as Tokyo, London, and San Francisco. The mall features a wide variety of shops, restaurants, and entertainment options, making it a favorite destination for both locals and tourists. In addition to shopping, Terminal 21 offers unique attractions like a cinema and a rooftop viewpoint. The mall is easily accessible via public transportation, including the BTS Skytrain, making it a convenient stop for visitors exploring the city.