Built in 1852 and substantially remodelled in 2012, Kings Cross is the UK’s ninth busiest station, with nearly 34 million uses in 2017-8. It was an important hub during World War One, and remarkably escaped undamaged, despite the massive volumes of explosives being shipped through it—on passenger trains, no less! That war’s blackouts and zeppelin raids are often forgotten, overshadowed by the blitz, but zeppelin bombs killed 1,414 people. Blackout rules forbade even bicycle lights, but trains were too essential to halt. Initially, lights on trains and stations made them easy targets, so eventually passengers were compelled to travel in totally darkened carriages and pass through blacked-out stations.