DPP #90, Prague Public Transport Museum, Stresovice, Prague, CZ, 2005

#90 is the oldest surviving tram in DPP's fleet, having been built in 1886, and is only run on special ocassions. It is also the only tram in the fleet to still be horsedrawn, as the tram system was electrified in 1896-1905, eliminating all of the trams except for this one. Incidentally, as this tram was open air, it was only intended for use during the summer. Looking around the tram, you can see that the museum looks a lot like a tram depot, and you're right. Stresovice is indeed an active depot, but the museum is on the left as you walk in, and the depot, Vozovna Stresovice, is on the right, servicing primarily work trams, training trams, and the historic trams that are in active use.