Piața Unirii (Union Square) is a major metro station in Bucharest. It is located in the southern part of the city centre, in Union Square (Piața Unirii in Romanian), and it is one of the busiest stations of the Bucharest Metro. It is made up of two terminals, one on the M1 and M3 lines and another on the M2 line, linked by a passage. The M1/M3 station was opened on 19 November 1979 as part of the inaugural section of Bucharest Metro, between Semănătoarea and Timpuri Noi. The M2 station was opened on 24 January 1986 as part of the inaugural section of the line, from Piața Unirii to Depoul IMGB. On 24 October 1987, the line was extended north to Pipera. A McDonald's fast-food restaurant is located in the vestibule above the M2 line platform. The station also features kiosks selling from newspapers to stationery, bakeries, a diversity of shops, public phones, a large transport police station (with a list of mugshots at the entrance) and mobile-phone servicing points. Due to the numerous entrances located in and around Piața Unirii square to the two metro terminals that make up the entire Piața Unirii station, it is located in Sectors 2, 3, 4, and 5 of Bucharest. The original entrances, opened in 1979 were shut off and replaced by newer ones around 1987, due to the reconstruction of the square. Nowadays some of them serve as service entrances, and from above-ground, they can be noticed by a narrow metal door. Incidents The station was flooded twice. The first time in 1983, a dyke was temporarily demolished in order to facilitate workings on the M2 station, however, a torrential rain subsequently led to the flooding of the M1 station, which was closed for some time, and the construction site of the M2 station, which was set back by the flood. May 1987 flood The second time, on 1 May 1987, the station was again flooded, when, during construction works on the nearby Unirii Underpass, an excavator breached a canal of the Dâmbovița. After another torrential rain, the river flooded the construction site on the underpass, which then leaked into the M1 station (at 20:30 hours), reaching up to 30 cm above the platforms, at 4:00 hours. The water damaged a number of electrical installations (cables, signals), and flooded service rooms. By midnight, multiple engineers and government officials surveyed the extent