Easter Greenock Castle (site of)

There's not much to see at Easter Greenock Castle these days, if we're being honest. What remains is essentially a grassy mound near Helensburgh, the sort of place you'd walk past and miss entirely unless you knew what you were looking for. The castle itself is long gone, but archaeology has confirmed this was genuinely a medieval stronghold, perched where the landscape opens up towards the Clyde. The site sits quietly in the Argyll countryside, and that's rather the point of it.

Historically minded types might find it worth a brief detour, particularly if you're already walking the wider area. There's something oddly compelling about standing on an empty hillock and imagining the structures that once dominated the horizon here. Kids will probably get bored within five minutes, though if they're into knights and castles you could spin a tale or two before moving on.

You won't need to set aside much time - twenty minutes maximum to wander around and take in the views. It's free, naturally, since there's nothing formal here. The real value comes if you're coupling it with a longer walk through the Argyll landscape, or if you're staying at somewhere like Rosneath Castle Caravan Park just down the road. That's a proper spot for a family base, and Easter Greenock Castle could slot in as a brief historical footnote to your wider explorations of the area. It's not a destination in itself, but it's worth knowing about if you're already in Helensburgh.