Isn’t exploring London great? That Saturday night 10-pinter that leaves you waking up cold, confused and lonely in West Ruislip. That prematurely terminating night bus in Bexleyheath. Look, it doesn’t have to be this way. Not anymore. Even in our Uber Pool/Night Tube hologram age there are still plenty of mysteries left in this city. And the London Transport Museum is lifting the lid on a few: deep dive down Euston station, tour 55 Broadway (an art deco wonder) and pace through Highgate’s urban wilderness.