From Wasserklo to Grashügel by way of Königskreuz St. Pankraz; The London U-Bahn Map
Yesterday I took the S-Bahn from my local train station in the suburbs of London. At the terminus at Wasserklo I took the Nördlich U-Bahn Linie to Königskreuz St. Pankraz, changing onto the Städtich Linie and finally alighted at Grashügel. No. Wait. That's not right.
What I actually did was take the South West Trains suburban line into London Waterloo, hopped on the Northern Line to King's Cross St. Pancras and then changed onto the Metropolitan Line and got off at Farringdon. What's going on here?