Platform 9 ¾

The Platform 9¾ sign at King's Cross station has become something of a pilgrimage site for Harry Potter fans, and fair warning - it's a bit of theatre. You'll find it tucked away on the main concourse near platforms 9 and 10, exactly where J.K. Rowling said it would be, and there's a proper queue most days. People genuinely come here to take photos with the sign and the trolley half-buried in the wall behind it, and you can't really blame them. It's free, takes about ten minutes if you're not waiting, and works as a quick stop whether you're catching a train or just passing through Watford on your way elsewhere. Families with young readers absolutely eat this up - there's something magical about standing in the exact spot that launched a billion-pound franchise. Older fans tend to find it bit of a tourist trap, all Instagram angles and merchandise stands, but the nostalgia hits differently if you grew up with the books. If you're staying at Frogmore Park Homes nearby, it's worth knowing this is basically the only Harry Potter sight in the immediate area - nothing else in Hertfordshire capitalises on the connection. The sign itself is genuinely well-preserved and atmospheric, especially if you catch it early morning before the crowds arrive. Just don't expect much more than ten minutes of content unless you're committed to the photograph marathon.