Brussels metro train of the type M6 nicknamed "Boa" on line 6.
Picture from the metro station Porte de Naumur 21.4.2024 by Ilkka Siissalo.

The same metro train as above but now seen from its side. These new metro trains were built by the Spanish company CAF and delivered 2007 to 2012.
Picture from the metro station Porte de Naumur 21.4.2024 by Ilkka Siissalo.

A type M6 "Boa" metro train built by CAF at an unrecognized metro station.
Picture 28.6.2024 by Petteri Holopainen.

Brussels metro train no.132 at Demey metro station.
Picture 7.9.2002 by Ilkka Siissalo.

Brussels metro coaches 182 and 183 at the Demey metro station.
Picture 7.9.2002 by Ilkka Siissalo.

A similar metro train like the ones shown above. These trains were built by several different companies during 1976 to 1999.
Picture 21.4.2024 from metro station Porte de Naumur by Ilkka Siissalo.

One of the old metro trains, number 191, seen close by.
Picture from the station Trône 28.6.2024 by Petteri Holopainen.

Brussels STIB tram no.3008. These new T3000 trams made by Bombardier have by now almost completely replaced all older trams of Brussels. The producing company Bombardier (now Alstom) calls these trams Flexity Outlook Cityrunners. It's a 30 metres long five section tram with driver's cabs at both ends and doors on both sides.
Picture from the tramstop Royale 21.4.2024 by Ilkka Siissalo.

A similar Bombardier series T3000 tram no.3023.
Picture from the tramstop Royale 21.4.2024 by Ilkka Siissalo.

At Brussels Gare du Midi these same trams run underground and stop at the same station than the metro trains, but since the floor height of the trams is much lower than metro trains, they are using a special section of the platform with stairs down to a lower level.
Picture from the station Gare du Midi 21.4.2024 by Ilkka Siissalo.

Brussels STIB tram no.2007 is one of the so called T2000 or Tram 2000 wagons that were built by Bombardier in Germany 1993-95. STIB has 51 of them.
Picture by the tramstop "Palais" 5.9.2002 by Ilkka Siissalo.

Another T2000 series tram, this time STIB no. 2050.
Picture by the tramstop "Palais" 5.9.2002 by Ilkka Siissalo.

STIB tram 7727 at Koeningstraat in Brussels. It is a PCC tram from the 1960s. PCC stands for President's conference committee. They were originally US trams from the 1930s that USA donated free or sold cheaply after the war as part of the so called Marshall aid programme. The Belgians got a licence and built more PCC trams themselves. This is a later development which is based on the technology of the original PCCs.
Picture 5.9.2002 by Ilkka Siissalo.

A detail view of the STIB tram 7727 at Koeningstraat in Brussels.
Picture 5.9.2002 by Ilkka Siissalo.

Still another view of the STIB PCC tram 7727 at Koeningstraat in Brussels. This 1960s model is essentially two original PCC trams coupled back to back.
Picture at Koeningstraat in Brussels 5.9.2002 by Ilkka Siissalo.

This STIB tram 7909 has been created by combining two of the PCC drivative trams like shown above back to back and thereby creating a bidirectional wagon. It has now two separate motor wagon parts with also two pantographs and doors on both sides.
Picture 27.6.2024 by Petteri Holopainen. The picture is presumably taken by the "small ring", Brussels inner ring road.