Platform 9¾

Student notePlatform 9¾ at King's Cross is a must for Harry Potter fans — free to take your own photos with the trolley and wall, though the official photographer's booklets cost extra (optional). Queues can run over three hours at peak times, so aim to arrive on a weekday between 7:30-8:00am to get through in under 30 minutes. The set gets wheeled away after 21:00 when the spot closes, so don't cut it close.