Cromer Windmill

You'll spot the brick tower long before you reach it - a proper red-brick windmill standing sentinel just east of Stevenage, looking rather like it's been there since the moment it was built and has no intention of going anywhere. Cromer Windmill is a working landmark, a genuine piece of milling heritage that gives you real insight into how Hertfordshire kept itself fed centuries ago. The structure itself is handsome in that no-nonsense way old industrial buildings manage - all function, minimal fuss, and somehow all the better for it.

What you actually do here depends on access at the time of visit. On good days you can get inside and see the machinery, which is worth the climb if your knees are up for it. The view from the top sweeps across the rolling Hertfordshire countryside, farmland stretching away in that gentle, undramatic way that makes you understand why this area was grain country. Plan on thirty minutes to an hour if you're stopping for a proper look around.

This works brilliantly if you're basing yourself at one of the local parks - Church Farm Ardeley is just a mile away, making it an easy morning or afternoon detour. Families with older kids who can manage a few stairs will find it interesting. Walkers should absolutely include it on any ramble around the area. Peak season is summer, though honestly the windmill does its thing regardless of weather. Check ahead on opening though - these places keep their own hours.