St Mary le Wigford Church, Lincoln

The Saxon tower of St Mary le Wigford rises above Lincoln's High Street like a proper medieval sentinel, and it's one of the oldest church structures in England - we're talking 11th century here. Walk inside and you'll find yourself in a working parish church that's managed to survive everything from the Dissolution to the Blitz, which frankly is remarkable for a building this old.

What strikes you first is how real it all feels. Not overly restored or touristy - just a functioning church where people actually worship. The tower itself is the star: hefty Romanesque stonework with narrow windows that wouldn't look out of place in a fortress. There's also a medieval effigy inside worth a look if you're into that sort of thing, and the general atmosphere is one of genuine age without being oppressive about it.

History buffs will get more from this than casual visitors, to be honest. It's not a spectacle - no grand nave or soaring vaults to gasp at. But if you're camped at Hartsholme Country Park or South Cliff Caravan Site and you've got an afternoon to poke around Lincoln's cathedral quarter, this is genuinely worth the fifteen-minute walk from the High Street. Admission appears to be free, though opening hours can be a bit variable depending on services. Pop in when you're exploring Lincoln's other medieval bits rather than making it a destination on its own.