Auderghem in the context of Brussels-Capital Region

Line 5 is a rapid transit line on the Brussels Metro in Belgium operated by STIB/MIVB. It connects Herrmann-Debroux in the south-east of Brussels to Erasme/Erasmus in the south-west via the city centre. It has existed in its current form since 4 April 2009, when the section of former line 1A between Beekkant and Roi Baudouin/Koning Boudewijn was replaced by the section of former line 1B between Beekkant and Erasme. Starting from Herrmann-Debroux, the line crosses the municipalities of Auderghem, Etterbeek, City of Brussels, Molenbeek-Saint-Jean, Koekelberg and Anderlecht. It serves 28 metro stations and has a common section with line 1 between Gare de l'Ouest/Weststation and Merode, and with lines 2 and 6 between Gare de l'Ouest and Beekkant. At Arts-Loi/Kunst-Wet, the line also connects with lines 2 and 6. Railway connections are possible at Brussels-Central, Brussels-Schuman, Merode and Brussels-West.

The first section of this line was built in the late 1960s between Schuman and De Brouckère, but was served by trams. The first metro was brought into service on 20 September 1976, and the existing underground section was extended up to Tomberg on former line 1B, and up to Beaulieu on former line 1A. Line 1A was further expanded eastwards, to Demey in 1977 and to Herrmann-Debroux in 1985. The line was also expanded westwards, to Sainte-Catherine/Sint-Katelijne in 1977, to Beekkant in 1981, to Bockstael in 1982, to Heysel/Heizel in 1985 and to Roi Baudouin in 1998.

Beaulieu (French pronunciation: [boljø] ) is a Brussels Metro station on the eastern branch of line 5. It is located in the municipality of Auderghem, in the south-eastern part of Brussels, Belgium. The station takes its name from the nearby Avenue de Beaulieu/Beaulieulaan.

The metro station opened on 20 September 1976. Until 1977, it was the eastern terminus of what was line 1A, when the extension to Demey station was opened. In 1985, the line was further extended to Herrmann-Debroux. Then, following the reorganisation of the Brussels Metro on 4 April 2009, it is served by the extended east–west line 5.

The Woluwe (French: [wolywe]; Dutch: [ˈʋoːlyu.ə]) is a stream that flows through several municipalities in the south-east and east of Brussels, Belgium, and is a right tributary of the Senne in Vilvoorde. The Kleine (little) Maalbeek is a tributary of the Woluwe in Kraainem. Many ponds formed along the stream over time, among which the Mellaerts Ponds still exist. The valley of the Woluwe crosses the municipalities of Auderghem, Watermael-Boitsfort, Woluwe-Saint-Pierre, Woluwe-Saint-Lambert, Kraainem, Zaventem, Machelen and Vilvoorde.

The towns of Woluwe-Saint-Pierre, Woluwe-Saint-Lambert and Sint-Stevens-Woluwe derive their name from it.

Herrmann-Debroux is a Brussels Metro station serving as the eastern terminus of line 5. It is located in the municipality of Auderghem, in the south-eastern part of Brussels, Belgium. It is named after the Belgian politician and former Mayor of Auderghem, Carl Herrmann-Debroux.

The metro station opened on 23 May 1985. Then, following the reorganisation of the Brussels Metro on 4 April 2009, it is served by the extended east–west line 5.

Etterbeek (French: [etœʁbek, -bɛk] ; Dutch: [ˈɛtərˌbeːk] ) is one of the 19 municipalities of the Brussels-Capital Region, Belgium. Located in the eastern part of the region, it is bordered by the municipalities of Auderghem, the City of Brussels, Ixelles, Schaerbeek, Woluwe-Saint-Lambert and Woluwe-Saint-Pierre. In common with all of Brussels' municipalities, it is legally bilingual (French–Dutch).

Demey (French pronunciation: [dəmɛ]) is a Brussels Metro station on the eastern branch of line 5. It is located in the municipality of Auderghem, in the south-eastern part of Brussels, Belgium. It is named after a former Mayor of Auderghem, Gustave Demey.

The metro station opened on 17 June 1977. Until the opening of the extension to Herrmann-Debroux in 1985, Demey station was the eastern terminus of line 1A. Then, following the reorganisation of the Brussels Metro on 4 April 2009, it is served by the extended east–west line 5.

Woluwe-Saint-Pierre (French, pronounced [wolywe sɛ̃ pjɛʁ] ) or Sint-Pieters-Woluwe (Dutch, pronounced [sɪnt ˈpitərs ˈʋoːlyu.ə] ) is one of the 19 municipalities of the Brussels-Capital Region, Belgium. Located in the eastern part of the region, it is bordered by Etterbeek, Auderghem and Woluwe-Saint-Lambert, as well as the Flemish municipalities of Kraainem and Tervuren. In common with all of Brussels' municipalities, it is legally bilingual (French–Dutch).

As of 1 January 2022, the municipality had a population of 42,216 inhabitants. The total area is 8.94 km (3.45 sq mi), which gives a population density of 4,722/km (12,230/sq mi). It is mostly a well-to-do residential area, which includes the wide, park-lined, Avenue de Tervueren/Tervurenlaan, and the numerous embassies located near the Square Maréchal Montgomery/Maarschalk Montgomeryplein. Of the three streams that once crossed the municipality, only the Woluwe, a tributary of the Senne, can still largely be seen today.

Ixelles (French, pronounced [iksɛl] ) or Elsene (Dutch, pronounced [ˈɛlsənə] ) is one of the 19 municipalities of the Brussels-Capital Region, Belgium. Located to the south-east of Brussels' city centre, it is geographically bisected by the City of Brussels. It is also bordered by the municipalities of Auderghem, Etterbeek, Forest, Uccle, Saint-Gilles and Watermael-Boitsfort.

As of 1 January 2023, the municipality had a population of 88,521 inhabitants. The total area is 6.41 km (2.47 sq mi), which gives a population density of 13,807/km (35,760/sq mi). In common with all of Brussels' municipalities, it is legally bilingual (French–Dutch). It is generally considered an affluent area of the region, and is particularly noted for its communities of European and Congolese immigrants.

The Sonian Forest or Sonian Wood (Dutch: Zoniënwoud, pronounced [ˈzoːnijə(ɱ)ʋʌut]; French: Forêt de Soignes, pronounced [fɔ.ʁɛ d(ə) swaɲ]) is a 4,421-hectare (10,920-acre) forest at the south-eastern edge of Brussels, Belgium. It is connected to the Bois de la Cambre/Ter Kamerenbos, an urban public park which enters the city up to 4 kilometres (2.5 mi) from the city centre.

The forest lies in the Flemish municipalities of Sint-Genesius-Rode, Hoeilaart, Overijse, and Tervuren, in the Brussels-Capital Region municipalities of Uccle, Watermael-Boitsfort, Auderghem, and Woluwe-Saint-Pierre, and in the Walloon towns of La Hulpe and Waterloo. Thus, it stretches out over the three Belgian Regions. It is maintained by Flanders (56%), Brussels (38%), and Wallonia (6%). There are some contiguous tracts of privately held forest and the Kapucijnenbos, the "Capuchin Wood", which belongs to the Royal Trust.

Watermael-Boitsfort (French, pronounced [watɛʁmal bwafɔʁ] ) or Watermaal-Bosvoorde (Dutch, pronounced [ˈʋaːtərmaːl ˈbɔsfoːrdə] ; archaic spelling: Watermael-Boschvoorde), often simply called Boitsfort in French or Bosvoorde in Dutch, is one of the 19 municipalities of the Brussels-Capital Region, Belgium. Located in the south-eastern part of the region, it is bordered by Auderghem, the City of Brussels (namely the Bois de la Cambre/Ter Kamerenbos), Ixelles, and Uccle, as well as the Flemish municipalities of Hoeilaart, Overijse and Sint-Genesius-Rode. In common with all of Brussels' municipalities, it is legally bilingual (French–Dutch).

As of 1 January 2022, the municipality had a population of 25,187 inhabitants. The total area is 12.97 km (5.01 sq mi) of which 58% is covered by the Sonian Forest, which gives a population density of 1,942/km (5,030/sq mi), four times less than the average of Brussels. Its average annual income per inhabitant is also the highest in the region (€25,063 in 2020).