World Museum, Liverpool
Five floors, free, and it covers three things small children reliably love: giant dinosaurs, an aquarium and a space gallery. The best wet-weather day within half an hour.
The £20 rule: proper days out in the North West that don't break it
Our rule for a cheap day out is simple: the whole family, everything included, for £20 or less. Not £20 a head. £20 for the lot of us, parking and the inevitable ice creams counted. It sounds impossible against attraction prices that have crept towards £25 a person, and it is not, because the North West is quietly stuffed with places that never got the memo about charging.
Everything below is costed for two adults and two primary-age children, using prices we checked in the last few days. Where a price is seasonal we say so. And one honest disclaimer up front: the £20 days need packed lunches. Buy four meal deals at a cafe and no arithmetic on earth saves you.
The £0 tier: the museums
Liverpool and Manchester run some of the best free museums in Europe and it is still not widely believed. World Museum has dinosaurs, an aquarium and a planetarium under one roof. The Science and Industry Museum runs working steam engines and a free summer programme. Salford Museum's rebuilt Victorian street and Ordsall Hall, the free Tudor manor down the road, are the pair almost nobody does. Entry to all four: nothing. The spend is parking or the train, and the cafe if you weaken.
The £0 tier: outdoors
Blackpool Beach between the piers, with lifeguards all summer, costs nothing until you meet the donkeys. Crosby Beach and its hundred iron men is the strangest free art gallery in Britain. Heaton Park has a free animal centre that beats several farms that charge; Wythenshawe Park runs a proper community farm for nothing; Stanley Park in its centenary year does Italian gardens and one of the coast's best playgrounds. Dream at Sutton Manor is a twenty-metre white head on a hill and children ask better questions there than anywhere ticketed. All free. Genuinely, structurally free.
The under-£10 family tricks
This is where knowing the pricing quirks pays. Tiny Teds at Stretford is the council's under-5s soft play: £3.45 for an adult and a child, £6.90 for four, juice and biscuits included. Jungle Mayhem in Radcliffe charges £6 a child and lets adults in free, so a family of four is £12 in a sector where £30 is normal. Cuerden Valley Park's only cost is £2.50 parking, and the river does the entertaining. Time the Ice Cream Farm after 3.30pm and entry drops to £1.50 a head: £6 in, then the ice creams are the budget.
The under-£20 full days
RSPB Burton Mere Wetlands is the model citizen: adults £7, first child free, under-5s free, parking free. Two adults and two children lands at £17.50 with den building and explorer backpacks thrown in. Funtastic in Radcliffe holds a family of four around the £20 line even in August because it refuses to surcharge holidays. Lymm Dam plus chips in the village, or Walton Hall where the gardens, zoo and playground are free and parking is the only charge, both come in well under with room for cones.
The seasonal cheats
Two worth catching before they go. The Ravenglass & Eskdale Railway is running buy-one-get-one-free on selected diesel services until 29 August, which halves the Lakes' best small train. And every evening from 4 September, the Blackpool Illuminations are six miles of free show; park mid-Promenade and walk.
What we deliberately left out
Nothing here is a discount code, a cashback trick or a voucher that dies next Tuesday. These are the standing prices, checked this week, of places whose economics are simply built kinder. If a venue creeps its prices or quietly starts charging for entry, it comes off this page; that has already happened once this summer and we rewrote the page the same day.
The £20 rule's last clause: the day that costs nothing but goes wrong still costs more than the £19 day that lands. Match the place to your actual children, pack more food than seems reasonable, and spend the saved money on the good ice cream. That is the whole system.
Questions people actually ask
What are the best genuinely free days out in the North West?
The national museums in Liverpool and Manchester are free, and so are some of the region's best outdoor days: Crosby Beach, Heaton Park's animal centre, Wythenshawe Park's community farm and Stanley Park in Blackpool. The only costs are parking and food.
Where can a family of four get a day out for under £20?
RSPB Burton Mere costs £17.50 for two adults and two children with free parking. Jungle Mayhem is £12 because adults go free. Tiny Teds is £6.90 for two adults and two under-5s. The trick is venues whose pricing favours families, not discount codes.
How do you keep food costs down on a day out?
Pack lunches and pick venues that allow them. Most parks, farms and National Trust properties welcome picnics, and even Gulliver's World lets you bring your own food. Four cafe meals routinely double the cost of a cheap day.
Are there cheap days out that work in the rain?
The free museums are the rainy-day core: World Museum, the Science and Industry Museum and Salford Museum are all indoors and free. Add council-run soft play like Tiny Teds and the wet £20 day is entirely doable.
Every place in this guide
Science and Industry Museum
Working steam engines, the story of Cottonopolis, and hands-on galleries in the world's oldest surviving passenger railway station. Free, and the live demonstrations are the bit kids actually remember.
Salford Museum & Art Gallery
Free, small and genuinely good: Lark Hill Place, a full Victorian street rebuilt indoors, is the bit the kids will remember. Peel Park is right outside for the run-around afterwards.
Ordsall Hall
A Grade I listed Tudor manor house marooned among Salford's new-builds, free to walk round, with a proper Great Hall, gardens and school-holiday craft sessions. Closed Fridays and Saturdays, which catches people out.
Blackpool Beach
Seven miles of sand with the famous stretch between the piers: donkeys, deckchairs, and RNLI lifeguards all summer. Free, obviously, and still the best-value thing in town.
Crosby Beach
A hundred cast-iron men stare out to sea along two miles of sand - Antony Gormley's Another Place, and the strangest, most memorable free afternoon on this coast. Sand, statues, ships from the port gliding past.
Heaton Park
One of the biggest municipal parks in Europe: a free animal centre, boating lake, adventure playgrounds and an actual vintage tram running on summer days. You will not do all of it in one visit.
Wythenshawe Park & Community Farm
A big south Manchester park with a proper community farm - pigs, goats, horses - a Tudor hall, and enough playground to earn the trip on its own. All free.
Stanley Park
Blackpool's grand free option: Italian gardens, a big boating lake, one of the best playgrounds on the coast and model boats on the lake. The antidote to a wristband day.
Dream, Sutton Manor
A 20-metre white head rising out of a reclaimed colliery, with woodland trails around it. Genuinely strange and memorable for kids, and a short walk rather than a hike.
Tiny Teds Soft Play, Stretford
The council's under-5s soft play session at Stretford, £3.45 for an adult and a child including juice and biscuits. The cheapest indoor hour in Trafford by a distance.
Jungle Mayhem
Radcliffe's jungle-themed centre: a four-lane slide, a ball pool with suction tubes, a sports zone and a disco room. Adults get in for nothing, which is rarer than it should be.
Cuerden Valley Park
650 acres of woods, meadows and river between the M6 and M65, with a visitor centre, a cafe and a river shallow enough to paddle in. A quarter of a million visits a year and most of Warrington has never heard of it.
The Ice Cream Farm
A small entry fee now, then a pay-per-play card for the attractions: a giant sand and water quarry, mini golf, go-karts and play areas, funded by a world-record ice cream shop. Cheap after 3.30pm, glorious in any weather.
RSPB Burton Mere Wetlands
A big Dee estuary reserve with a den-building area, hides you can actually get a pushchair into and free parking. The first child goes free and under-5s always do.
Funtastic Play Centre
The long-standing Radcliffe centre, and the one that refuses to charge more at weekends or in the school holidays. Multi-tier frame, proper toddler section, home-cooked cafe.
Lymm Dam
A 2km woodland loop round a Victorian dam on the edge of Lymm village: flat enough for a pushchair in dry weather, with a coffee van at the top and ducks all the way round. The classic short local walk, done properly.
Walton Hall & Gardens
The reliable default: gardens, a children's zoo, a big playground and plenty of room to run. Pay for parking, nothing else.
Ravenglass & Eskdale Railway
Miniature steam engines - properly miniature, knee-high to a real train - hauling open carriages seven miles into the fells. Forty minutes of pure delight each way; combine with Muncaster next door.