Museum of Brussels Urban Transport seems to be one of the biggest tram museum in Europe. We can enjoy not only normal exhibition but also heritage tram-riding into the town.
There is a combination ticket with visiting museum and historic tram-trip.
It is possible to ride the tram from some station which the historic vehicles run through.
Tourist Tramway also run about 40km occasionally (see official website).
Tram depot style museum offers also the opportunity of looking historic buses.
There are various non-revenue equipment. It looks like the special car for cleaning railroad.
In the city centre, the tram runs into the underground network. Some of them are called 'Pre-metro', because the network is considered to conversion the real metro system in advance.
Anyway, it is worth to visit Brussels if you are interested in transport systems.
(2013/2/28)