Lud Castle

Lud Castle sits on a craggy outcrop near Arbroath, and it's one of those archaeological sites that rewards the walk far more than the ruins themselves might suggest. What you're looking at are the remains of a medieval stronghold - crumbling stonework and earthworks that speak of centuries past, though precisely which centuries remains a matter of some debate among historians.

The site's main appeal is the walk itself. You'll approach through moorland and rough ground, which means proper footwear and a bit of effort, but the views across Aberdeenshire open up as you climb. The castle itself is compact - don't expect Dunvegan - but there's something satisfying about picking through the rubble and trying to work out where the keep stood.

History enthusiasts will get the most from this. Families with young children might find the walk tedious and the ruins underwhelming in return. Walkers heading through the area should absolutely make the detour though. Allow a good hour for the round trip including poking about.

It's free, obviously, and accessible year-round, though winter mudiness can be grim. If you're staying at The Grange Glamping just down the road, this makes for a solid morning's exploration before settling back for a proper lunch. The site won't eat a whole day, but it's the sort of thing that sticks with you - raw landscape, genuine antiquity, no crowds whatsoever.