LED = St. Petersburg. The city was called Leningrad, so it actually makes sense...

Another good one:
HMA = Malmo City Hovercraft (out of service)
MMX = Malmo Sturup
XFR = Malmo Syd (train)
XFP = Malmo Central station (train)

All of them can be bunched together with another abbreviation:
MMA = Malmo