Promenade MRT station

Platform B of Promenade station serving the CCL, with the artwork "Dreams in a Social Cosmic Odyssey" (D.I.S.C.O.) by PHUNK studios

The station was initially part of the Marina Line, serving between the Dhoby Ghaut and Stadium stations, which was later incorporated into the CCL Stage 1.[6][7] Contract C825 for the design and construction of Millenia station (the working name at the time) and associated tunnels was awarded to Shanghai Tunnel Engineering Co. (Singapore) Pte Ltd and a joint venture with Woh Hup and NCC at a sum of S$343.94 million (US$191.93 million) on 19 December 2001.[8][9][10][11]

In 2005, the station's name was finalised as Promenade, in light of its proximity to the Marina Promenade. Although Sheares garnered the most votes in the station names poll, it was decided that naming the station after the former president Benjamin Sheares was considered very 'prestigious' and hence was not named after him.[4] During the station's construction, on 25 March 2003, a section of Rochor Road (from ECP to Suntec City) was realigned.[12]

The station opened on 17 April 2010 along with the rest of Stages 1 and 2 of the Circle line.[13][14] Subsequently, a two-station 2.4-kilometre (1.5 mi) extension from Promenade to Marina Bay station was announced on 28 November 2011.[15] On 14 January 2012, the Circle line extension started operations.[16][17][18]

Platform C of Promenade station bound for Expo station on the DTL, which is the 2nd deepest platform on the network

On 14 June 2005, the Land Transport Authority announced the 3.4-kilometre (2.1 mi) Downtown extension (renamed to "Downtown Line Stage 1") to serve the New Downtown at Marina Bay area.[19] Eventually, the station became part of the newly christened Downtown Line stretching 40 kilometres (25 mi).[20][21][22][23]

Contract C902 for the design and construction of the Downtown Line station and its adjacent tunnels was awarded to Shanghai Tunnel Engineering Co. (Singapore) Pte Ltd at a contract sum of S$231.9 million (US$163.89 million) in August 2008. Portions of Temasek Avenue were realigned during the construction period to allow work to be carried out.[24] The DTL station opened on 22 December 2013 as part of Stage 1 of the Downtown Line.[25][26]

Promenade station is located underneath Temasek Avenue and adjacent to Millenia Tower.[1][2] The station also serves several key locations and attractions such as Suntec City, Singapore Flyer, The Float@Marina Bay and the Marina Bay Street Circuit.[27] It is also close to the Marina Promenade after which the station is named after.[4][28]

The station is designed by DP Architects. The station features a "curvilinear envelope with deep-edged metal louvres" to conceal the concrete service shafts and integrate with the vertically-glazed skylights. The three entrances to the station have identical features of thin and sharp lines for the roof and glazed panels for the sides. The interior features a pattern of light grey and granite floors, with granite and stainless steel-trimmed panels on the walls and metal-grid ceilings.[29]

The DTL platform bound for Bukit Panjang station is at 42 metres (138 ft) below ground, the second deepest platform in the entire MRT network behind Bencoolen station at 43 metres (141 ft).[30] The station also features one of the longest escalators on the MRT network, with the length being 17.56 metres (57.6 ft).[31]

"Earthcake" by Ana Prvacki at DTL Platform D

Two artworks are featured at this station as part of the MRT network's Art-in-Transit Programme. At the CCL platforms, the artwork "Dreams in a Social Cosmic Odyssey" (D.I.S.C.O.) by PHUNK studios features huge metallic droplets suspended from the ceiling, to represent an "illuminated celebration of collective dreams". The droplets reflect the sunlight from above, creating a moving kaleidoscope on the station floors. These waves of light illustrate the "ebb and flow" commuter traffic and allow the interaction of passengers in transit with the art piece.[32][33][34]

The four artists – Alvin Tan, Melvin Chee, Jackson Tan and William Chan – decided to make use of the skylight such that the artwork becomes a key feature of the station, instead of creating a mural on the station wall. Initially, it was planned to hang a chandelier made up silhouettes of human figures representing how "People illuminates Life", but was considered by the Art-in-Transit panel as "too literal". Inspired by the station's proximity to the Marina Bay Reservoir and Kallang Basin, the artists decided to use water droplets for the artwork.[35]

At the DTL platforms, an artwork "Earthcake" by Ana Prvacki depicts the grounds of tiers of Singapore's geology, history, culture, growth and development. The artwork also bears similarity with one of the colourful local kuehs, reflecting Singapore's multi-cultural food to traditions.[33][36]