English Heritage protects and preserves some amazing historical buildings across the country. They've asked their Facebook fans for their top 10 favourite castles - and here's the results!
1. Dover Castle, Kent
Standing high above the White Cliffs, Dover Castle has guarded our shores for over 900 years. You need a whole day, maybe two to uncover everything Dover Castle has to offer, from meeting medieval royalty in the Great Tower to exploring deep underground in the Wartime Tunnels.
"Time travel castle! My imagination was sent into overdrive. Secret tunnels, medieval banquets, beautiful chapels all in one place."
"My favourite castle is Dover because we love pretending to be medieval knights and then straight onto secret WWII operations all in a day!"
"Eight hours of pure pleasure and not a minute unfilled. Best day ever for all ages. Not to be missed.".
One of the most spectacular castle ruins in the country, Kenilworth is best known as the scene of a royal romance between Elizabeth I and her favourite Robert Dudley. It's that romance which has captures imaginations as visitors explore the evocative ruins while the kids become 'king of the castle' for a day.
"You can lose yourself in your imagination, transporting yourself back in time - imagining the glitz and glamour of a queen's visit."
"I wonder what this was? What did that look like? I wonder if the Queen was the last person to look out of that window. So thought inspiring."
"Hours of things to see and do along with beautiful heritage for my children to learn from and admire."
This fairytale castle is perhaps most famous as the royal prison of Charles I, and the story of his failed escape - ending up with being wedged between the window bars - has intrigued many visitors! It's not just past residents that fascinate at Carisbrooke though; the famous donkeys who operate the tread wheel in the Elizabethan wheelhouse prove very popular!
"Our family had a brilliant day at this castle our little boy loved dressing up as a knight. We also really enjoyed seeing Jill the donkey."
"It has everything. Royalty tried to escape, royalty stayed there. It's mystical and yet solid. And it has donkeys!"
The dramatic ruins of Dunstanburgh have witnessed plenty of action of the years, including fierce fighting during the Wars of the Roses. Now they stand on a remote headland, with beautiful views from the surrounding coastline.
"The coastal walk to the castle followed by the vast site to explore makes this one to return to over again. Atmospheric, stunning, a must!"
"A wonderful kipper lunch in Craster followed by a lovely walk along the coast to Dunstanburgh Castle, history and marvellous views. Perfect."
Sir William Cavendish used Bolsover as his party palace in the 17th century, and it's easy to see why. Today you can enjoy beautiful views over the countryside, pretend to be a knight as you explore the ruins and see horses put on dazzling displays in the Riding House.
"I love Bolsover Castle so much, it has stunning scenery, wonderful extensive grounds, and awesome buildings to lose yourself in the past!"
"I get to be a knight and I love the gift shop." (4 year old visitor)
Beeston is famous for its spectacular views over eight counties on a clear day! But that's not the only reason for a visit - there are beautiful woodlands to explore, wildlife trails for the kids and the chance to hunt down the lost treasure of Richard II…
"The setting is gorgeous, with wonderful woodland walks and plenty to explore. The castle itself is beautiful with an amazing view."
Once home to the powerful Percy family, Warkworth was and remains one of the largest and most impressive fortresses in North East England. It was once home to 'Harry Hotspur', hero of many Border ballads and the bane of Scots raiders.
"My favourite castle is Warkworth because it is everything a castle should be; fortress, home, and (still to me) a sanctuary. I'd live here."
"The ruins allow you to appreciate what an impressive presence it has been for hundreds of years, but still lets your imagination run wild."
This magnificent fortress has a long and colourful past, home to Mary Tudor before she became Queen, used as a prison for enemies of the monarch in the 16th century, and later on, used as a Poorhouse. There's now plenty of history to explore, games and interactive activities for younger visitors and beautiful views to enjoy from the wall walk.
"My family love the castle because you have a true adventure when you visit. You can imagine living here when it was a working castle."
From the top of the mighty keep at Portchester Castle you can see right out over the harbour, and imagine the castle standing guard over the Solent for hundreds of years. Now you can discover the story of the castle in the exhibition, and the walled grounds make for a perfect spot for a picnic.
"I love Portchester castle, and spend at least a day a month within the grounds and visit the keep at least twice a year. It's just beautiful."
"With a history going back almost 2000 years this place is special amongst British castles. If it could talk imagine the tales it would tell."