
Williamson Park
The Ashton Memorial dome you can see from the M6, with views across Morecambe Bay, a butterfly house, mini beasts and a good playground below it. Lancaster's best free afternoon.
Lancaster, Lancashire

The Maritime Museum is in the old Custom House on St George's Quay, beside the Lune, plus the upper floor of the warehouse next door. You can sit in a packet boat from the Lancaster Canal, hear local fisherfolk talk about life on Morecambe Bay and learn about crossing the sands. The displays also cover the port's part in the transatlantic slave trade, which older children may have questions about.
Children are free, as are adults from the district, and everyone else pays £5. It opens from 12 to 4 on Friday to Monday and is closed Tuesday to Thursday. There is a free sensory backpack for children on the autism spectrum, with ear defenders and fiddle toys, which is worth asking for at the desk. Toilets and baby change are on the ground floor.
The Galley gift shop and grab-and-go cafe does tea, coffee, cold drinks and snacks, with seats inside and picnic tables outside in the boatyard, where dogs are welcome. Pair it with the City Museum on Market Square, which shares the free-for-children policy and opens on the same Fridays to Mondays.
What it costs: Free for under 18s, Lancaster district residents, full-time students and carers. Other adults £5 for a day ticket, £8 for a weekly multipass or £10 for an annual multipass.
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The Ashton Memorial dome you can see from the M6, with views across Morecambe Bay, a butterfly house, mini beasts and a good playground below it. Lancaster's best free afternoon.

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One email a week: what is on this weekend within a sensible drive, and the places worth booking before they go.