Marina Bay MRT station is an underground Mass Rapid Transit (MRT) interchange station on the North South (NSL), Circle (CCL) and Thomson–East Coast (TEL) lines in Singapore. Located in the Downtown Core district near Marina Bay, the station serves the Marina One Residences, Marina Bay Suites and the Marina Bay Financial Centre. Marina Bay station was one of the last stations to be completed in the early phases of the MRT network, opening on 4 November 1989. It was the terminus of the NSL until the line's extension to Marina South Pier station in 2014. The station became an interchange station with the CCL upon the completion of the two-station branch extension from Promenade station in January 2012. The TEL station platforms were completed in November 2022 as part of TEL Stage 3, becoming a triple-line interchange on the MRT network. The station features numerous works of art as part of the MRT network's Art-in-Transit programme. An overhanging flower sculpture Flowers in Blossom II is displayed over the CCL mezzanine. The CCL platforms feature a series of photographs Train Rides on Rainy Days by Nah Yong En and the TEL station features a series of murals Walking into The Interstitial by Tang Ling Nah. History North South Line The station was named Marina South in the early plans of the MRT network published in May 1982. Confirmation that the station would be among the Phase I stations (from Ang Mo Kio to this station) came in November that year alongside a name change to Marina Bay. This segment was given priority as it passed through areas that had a higher demand for public transport, such as the densely populated housing estates of Toa Payoh and Ang Mo Kio and the Central Area. The line aimed to relieve the traffic congestion on the Thomson–Sembawang road corridor. Civil Contract 310 for the construction of the cut-and-cover connecting tunnels, as well as Marina Bay MRT station, was awarded to a joint venture between Gammon and Antara Koh at a value of in April 1986. The main challenges of the construction included tunnelling underneath the Telok Ayer Basin and building the station and tunnels in soft soil. Due to the soft marine clay, open excavation was not possible. Divers had to cut the trenches for the MRT tunnels in zero visibility and very muddy water. A concrete base for the tunnels was then laid