Gare du Midi metro station in the context of Simonis and Elisabeth stations

Line 2 is a rapid transit line on the Brussels Metro in Belgium operated by STIB/MIVB. It has existed in its current form since 4 April 2009, when the section between Delacroix and Gare de l'Ouest/Weststation was opened, which allowed to close the "loop" from and to Simonis/Elisabeth. The configuration of Simonis/Elisabeth though does not allow trains on line 2 to perform the loop several consecutive times in the same direction, i.e. a train running clockwise from Elisabeth will have to run counterclockwise from Simonis. The two termini of line 2 have thus received different names: originally Simonis (Elisabeth) and Simonis (Leopold II), changed in November 2013 to Elisabeth and Simonis. Between Yser/IJzer and the Porte de Hal/Hallepoort, the line runs under the Small Ring (Brussels' inner ring road), which was itself built on the site of the former second walls of Brussels. The line crosses the municipalities of Koekelberg, Molenbeek-Saint-Jean, City of Brussels, Saint-Gilles and Anderlecht.

The first stations on the Small Ring were opened in 1970 with tramways connecting Rogier to Porte de Namur/Naamsepoort. Louise/Louiza was opened in 1985 and Simonis in 1986, but it was only in 1988 that the actual metro line 2 was first serviced with metros. The following stations also opened that year: Ribaucourt, Yser, Hôtel des Monnaies/Munthof, Porte de Hal and Gare du Midi/Zuidstation. The existing stations were converted in order to be serviced by metros. In 1993, the line was expanded to Clemenceau, and then to Delacroix in 2006. The route of line 2 is also currently served by line 6, which then continues from Simonis to Roi Baudouin/Koning Boudewijn.

Porte de Hal (French, pronounced [pɔʁt də al]) or Hallepoort (Dutch, pronounced [ˈɦɑləˌpoːrt]) is a rapid transit station in Brussels, Belgium, consisting of both a metro station (on the southern segment of lines 2 and 6) and a premetro (underground tram) station (serving lines 4 and 10 on the North–South Axis between Brussels-North railway station and Albert premetro station). The station is located in the municipality of Saint-Gilles, south of the City of Brussels, under the Small Ring (Brussels' inner ring road) and next to the 14th-century Halle Gate, after which it is named. It is one metro stop away or about ten minutes' walk from Brussels-South railway station.

The metro station opened on 2 October 1988 as part of the Louise/Louiza–Gare du Midi/Zuidstation extension of line 2 from Simonis. Line 2 has since been extended beyond Gare du Midi to Clemenceau in 1993, Delacroix in 2006, and Gare de l'Ouest/Weststation in 2009. Since 3 December 1993, the station has also accommodated North–South Axis premetro services at separate platforms (the metro operates one level below the premetro lines). Then, following the reorganisation of the Brussels Metro on 4 April 2009, it is served by lines 2, 3, 4 and 6. Line 3 was disbanded in 2024 and replaced by the new line 10.

Louise (French) or Louiza (Dutch) is a Brussels Metro station on the southern segment of lines 2 and 6. It is located under the Small Ring (Brussels' inner ring road) at the Place Louise/Louizaplein, at the end of Avenue Louise/Louizalaan, in the City of Brussels, Belgium. The station takes its name from that nearby avenue, itself named after King Leopold II's eldest daughter, Princess Louise.

The metro station opened on 19 August 1985 and was the southern terminus of line 2 until the opening of an extension to Gare du Midi/Zuidstation on 2 October 1988. Line 2 has since been extended beyond Gare du Midi to Clemenceau in 1993, Delacroix in 2006, and Gare de l'Ouest/Weststation in 2009. Then, following the reorganisation of the Brussels Metro on 4 April 2009, it now lies on the joint section of lines 2 and 6.

Hôtel des Monnaies (French, pronounced [otɛl de mɔnɛ]) or Munthof (Dutch, pronounced [ˈmʏntɦɔf]) is a Brussels Metro station on the southern segment of lines 2 and 6. It is located under the Small Ring (Brussels' inner ring road), near Saint Peter's Hospital, in the municipality of Saint-Gilles, south of the City of Brussels, Belgium. One of its entrances is on the Rue de l'Hôtel des Monnaies/Munthofstraat, after which it is named, and where Belgian currency used to be minted.

The metro station opened on 2 October 1988 as part of the Louise/Louiza–Gare du Midi/Zuidstation extension of line 2 from Simonis. Line 2 has since been extended beyond Gare du Midi to Clemenceau in 1993, Delacroix in 2006, and Gare de l'Ouest/Weststation in 2009. Then, following the reorganisation of the Brussels Metro on 4 April 2009, it now lies on the joint section of lines 2 and 6. During the construction, work on the metro tunnels ran up against the foundations of Brussels' old city walls, which ran 10 metres (33 ft) beneath ground level. These walls now form part of the station.