As such I took lasting intricate mental pictures of Highbury and Islington, the kind you do when you're 9 or 10 years old, to the extent that when I revisited it for this journey, despite not having set foot in it for decades, I remembered the design and layout eerily well.
I have particularly vivid memories of being intrigued by the platform adjacent to the Victoria Line one, which we never used but of which I forever caught glimpses through connecting tunnels. This was, and still is, the old Northern City Line, about which I've talked when I visited Moorgate, and which back then was run by British Rail.
The fact it's adjacent to the Victoria Line platforms is testament to the logic applied to Highbury and Islington when the station was reconfigued to incorporate the Victoria Line. It's a brilliant interchange all round, really, with the mainline service on adjacent platforms to the Victoria Line both north and southbound, plus an easy link to the Silverlink North London Line, which this year will become - excitingly - the London Overground.
Anyway, the current entrance to Highbury and Islington hails from the opening of the Victoria Line in 1968 and has little merit:
The original 1872 station, however, still stands in all its splendour on the opposite side of the road:
At the time of writing, King's Cross St Pancras is even more of a mess than usual. Ironically the entrance to the Underground is one of the few bits that's actually fairly tidy.
Work has obviously picked up apace ahead of the fixed opening of St Pancras International in November, and now there's an even more tortuous route from the mainline station to the Underground. What there is to see of the renovated building, however, looks monumentally stunning.
Similar Herculean work is scheduled to begin at Euston soon, to construct a sensible and long-needed tunnel between it and the nearby Euston Square station, hence enabling a simple, if long, connection between the Victoria/Northern lines and the Circle/Metropolitan/Hammersmith & City lines.
Both of these stations, and the next - Warren Street - I've already visited on the Northern Line. As this blog goes on, more of these duplications will inevitably arise. I can't think of anything else to say about Warren Street except the new University College Hospital building opposite is superb.
Saturday afternoon outside Oxford Circus station is one of the worst places in the world.
It seems there was never not a time when this insidious interchange wasn't overcrowded, or in a state of renovation, ever since its opening in 1900. Intriguingly, during the expansion to accommodate the Victoria Line in the 1960s, a large bridge-like edifice was built over the Regent Street/Oxford Street junction, over which all traffic was diverted for five years. Despite being such an iconic and ostensibly flagship station, you take your life in your hands when you enter during the rush hour. Some of the corridors bear posters from the late 1980s.
Green Park is only marginally less busy, but gains points for boasting an acoustic guitar-wielding busker every weekday morning who plays, among other things, the theme from The Deer Hunter.
It was first opened in 1906, called Dover Street. The name was changed in 1933 when new entrances were added on the south side of Piccadilly, thereby allowing you to exit and be inside the titular park within seconds. All I can say is that this nearness to nature is a blessed relief when you're emerging, always hot and usually bothered, from the Victoria Line of a workday morning.