| Comment | Note that Inverary Castle is not an 'old' castle like you might be imagining, it's an 18th century stately home. Worth visiting, but not the sort of medieval thing you might be looking for (i.e. it wasn't built as an actual fortress).
You can see a list of castles around the Glasgow https://thecastleguy.co.uk/castle/bothwell-castle/ but bear in mind there's not much of most of them left (any medieval castle which wasn't intentionally maintained is basically a few crumbling walls by now).
The best well-preserved 'big' castle nearby would be Stirling Castle, which is a 40-minute train ride from Glasgow city centre. |
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