extended to Changi Airport station. However, due to ridership falling below expectations, the service was reverted into shuttle mode on 22 July 2003. On the DTL, the station is the current terminus on the line, with the next station being Upper Changi station. The DTL extension to Sungei Bedok is scheduled to open in 2024; the next station in that direction will be Xilin. Architecture The elevated EWL station is designed by British architectural firm Foster and Partners. The station contains a stainless-steel roof over the concourse and ticket level, measuring in diameter, which overlaps with a long titanium roof over the platform level. The roof above the concourse reflects sunlight into the station, reducing the need for artificial lighting, while the platform canopy deflects heat from the sun, cooling the platform by up to compared to its surroundings. The materials of the roofs were adapted to Singapore's climate. The station's large interior allows natural lighting and ventilation. Expo station is the first on the MRT that did not require paintwork as the interior is mainly stone, glass or metal. The station contains a lift in a transparent shaft, as well as highly illuminated energy-saving escalators, which complement the "futuristic outlook" of the station. The futuristic design is intended to reflect the country's willingness to experiment with new ideas and technology, symbolising the "thriving world-class city" that Singapore was projected to become in the 21st century. The DTL station design by Greenhilli utilises "interconnectivity, spatial volume, asymmetry, daylight, colour [and] super-graphics" to signify transition and movement. The station is designed to allow commuters to navigate around the station easily while making it identifiable to the locality. The station's entrances and auxiliary buildings are designed in a "sculptural and dynamic" manner, which the designers believed would give the impression of "gateways" into the neighbourhood. The station was praised for its "excellent design" for its "refined" detailing and ingenious usage of colours and textures, while fulfilling the "restrictive" demands around the area. The station design won the Singapore Institute of Architects Design Awards 2020, with the institute's jury citing the station's "elegant resolution of architecture". Artwork The artwork "A Banquet" by Yeo Chee Kiong was commissioned at the DTL station as part of the MRT network's Art-in-Transit programme, a showcase that integrates public artwork in the MRT network. The large 3D artwork depicts two reflective isometric chairs and a bulbous speech balloon,