It was such a lovely day, and the sky and the sea were so blue

When I was at primary school in the 1990s, Enid Blyton books were banned. Our well-meaning headmistress looked down her nose at their simple plots and two-dimensional characters (not to mention Blyton's old-fashion attitudes towards race and gender) and instead tried to pour Dickens and Tolkien into our young minds.

Of course, there’s nothing like banning something to make it irresistible to children, and so my little friends and I gobbled up the forbidden fruits of The Famous Five and The Secret Seven by torch light under our duvets.

We loved these stories – and not just because they were against the rules. Every one of Blyton's books is a terrific page-turner, with something exciting happening in nearly every paragraph. Are her stories great works of literature? Definitely not. But who cares if they inspire kids to love of reading? There'll be plenty of time for Dickens later.

They held their hard-boiled eggs, munching happily. There was a dish of salt for everyone to dip their eggs into.

Blyton's world of hard boiled eggs and lashings of ginger beer seems a million miles away from the lives of savvy Snapchatting kids in 2017, and yet her books continue to be best-sellers. To celebrate the 75th birthday of The Famous Five, Hachette Children’s Group has published a new edition for yet another generation of readers, this time with stylish, modern covers by children’s illustrator Laura Ellen Anderson.

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Stylish new covers for 2017

To understand why The Famous Five books have stood the test of time and why these old-fashioned stories are still so appealing to children, I took a pilgrimage to the place where the plucky gang spent their 'hols'.

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Swanage, where Blyton spent many happy summers

Blyton first visited Dorset in 1931 when she was 23. She fell in love with the place and over the years made regular trips to Swanage, where in 1950 she bought the Isle of Purbeck Golf Club. Although Blyton never explicitly names Dorset in her books, the county's rugged coves and sleepy villages became the setting for many of The Famous Five's adventures. 

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A steam train chugs through Corfe Castle station in Dorset

The Famous Five's adventures often begin with the children arriving in the countryside by train, home from boarding school for the summer. You can start your Dorset adventure the same way, by taking a 22-minute steam train from Swanage to Corfe Castle.

The station was built in 1885 and has been painstakingly restored by a team of eager volunteers, who love to talk to visitors about their impressive project. 

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A rainbow appears over the signal house. Photo: Amy Hopkins

As your train pulls in at Corfe Castle station, you'll spot old leather cases piled on the platform, almost as if Anne, Julian and co have just arrived. Peer through the train window and you’ll see Corfe Castle itself, the inspiration behind the mighty Kirrin Castle in the Five books.

Castle proud and strong

The dramatic 11th century ruins loom over the town of Purbek and on cloudy days, the castle looks just like the cover of a gothic romance novel. A short walk from the station brings you to the foot of Corfe’s craggy keep, which rises up out of the steep mound it sits on. The green hills grow into the stone ruins and the castle is so much a part of the landscape that, even up close, it’s hard to tell where the land ends and the stone begins.

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Adventure waits around every corner at Corfe Castle

Exploring the warren of fallen walls, hidden cubby holes and arrow slits, it’s easy to see why Blyton saw adventure and intrigue here. It feels like a place where treachery and treason wait around every corner. Blyton obviously knew the castle inside out – her descriptions of ‘broken archways, tumbledown towers and ruined walls’ are spot on.

National Trust guides take fascinating tours around the ruins and during summer months there are dressing up boxes for kids who want to recreate scenes from the castle’s colourful history.

The sky seemed freshly washed

Blyton's normally clunky writing comes alive when she describes birds, flowers and trees, and there was plenty of wildlife to inspire her at Corfe Castle.

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Jackdaws glide over the town on Purbeck

Jackdaws circle in the 'freshly washed sky' above the towers and swoop down on bits of sandwiches dropped by tourists, like seagulls on a beach. High in the castle walls sit huge tangled ravens' nests. The adult birds swoop effortlessly in and out, followed by their flapping babies who crash clumsily into the keep. Ravens have returned to the castle after leaving in the 17th century, disproving the ancient legend that if they ever left, the castle would crumble

The ground around the ruins is a carpet of treasures that have been there since the castle was destroyed hundreds of years ago. Eagle-eyed kids love hunting for ancient pieces of bone, slate and oyster shell. There’s also the odd crisp packet to be found, but the National Trust volunteers soon see to those.

Spend a weekend with your kids searching for treasure at Corfe Castle and riding steam trains through the English countryside and, for a moment, your childhoods collide. After my weekend of adventure in Dorset, I can see why The Famous Five books are still popular (Blyton books sell at a rate of one a minute in the UK). Anne, Julian, Dick, George and Timmy live in a gloriously grown-up free world where children roam the countryside by themselves, enjoying thrilling adventures and hard boiled eggs under freshly washed skies. In Blyton's world, children are always the heroes - and that’s something that will never go out of fashion.

Enid Blyton’s Dorset: the lowdown

How to get there

From London Waterloo, South West Trains take 2.5 hours to Wareham in Dorset

Swanage Railway

Between April and October steam trains run every day. A return ticket costs £12.50 for adults and £7.60 for children

From Corfe Castle station Swanage Railway trains run to Harman’s Cross and Swanage, or north to the mining museum at Norden

Where to stay

The Pig on the Beach in Studland is a gorgeous country house with uninterrupted views of the sandy coastline. Double rooms start at £137 per night. Extra beds can be added for under 12s (£20 per night) and there are two inter-connecting rooms available  

More things to do nearby 

Take the ferry from Poole Quay to Brownsea Island 'in the great blue harbour', the inspiration behind Blyton's Whispering Island

Ramble on Stoborough Heath National Nature Reserve 

Play on sandy beaches at Studland

Take afternoon tea at The Isle of Purbeck Golf Club, which Blyton bought in 1950

Don't miss the best days out for families in South West England.