Portland Museum

The Portland Museum sits in a converted Victorian prison governor's house - which immediately tells you something about the island's peculiar past. You're looking at exhibits covering everything from the local stone industry (which built half of London, apparently) to wartime bombing raids and the quarrying heritage that shaped this place. It's small, focused, and refreshingly unpretentious.

Walking round takes about ninety minutes if you're properly interested. The stone displays are genuinely fascinating - Portland stone isn't just some local commodity, it's the material that built St Paul's Cathedral and the Bank of England. There's also substantial coverage of World War II, which hit this area hard. The museum doesn't shy away from that.

Historically minded visitors will find it worthwhile. Kids might manage an hour before restlessness sets in, unless they're already engaged by industrial heritage or wartime stories. Admission details aren't advertised online, so ring ahead or check when you arrive - it's worth knowing the cost and opening hours before making the trip from Weymouth.

It works as a half-day stop if you're basing yourself at one of the nearby holiday parks. Waterside and Chesil Beach Holiday Park are both within easy driving distance, and the museum pairs well with a walk along Chesil Beach itself - the shingle ridge everyone talks about. After an hour here, you'll actually understand what you're looking at out there.