From King's Lynn historic funfair to the Romans in Norwich, via circus fun, puddle jumping, science, steam trains and star-spotting in the Norfolk sky.

Eastern Daily Press: Casson & Friends' trademark interactive show Night at the Theatre will spark the imagination of children and their grown-ups. Picture: SubmittedCasson & Friends' trademark interactive show Night at the Theatre will spark the imagination of children and their grown-ups. Picture: Submitted (Image: Archant)

• King's Lynn Mart

Tuesday Market Place, King's Lynn, February 14-25, 01553 763044, visitwestnorfolk.com

All the fun of the fair as the historic Mart returns to King's Lynn for the 813th time! Traditionally, this is the first funfair in the Showmen's calendar where new rides are tried out and old favourites brought out from winter storage. For a period of two weeks each year, starting on February 14, the Tuesday Market Place pulsates with the sound of loud music, screaming youngsters and whirling machines. The Mart is open at noon all of half-term week.

• Batman Bonanza

Castle Mall, Norwich, February 14, 11am-3pm, admission free, castlemallnorwich.co.uk/whats-on

Holy smoke the Batmobile is back! To coincide with the LEGO Batman movie this family event has lots of activities. Meet Batman and Batgirl stiltwalkers, free superhero crafts, face-painting and the Batmobile from the 1989 film is on display. Children can make superpower belts, spider shields, superhero skirts and lego-look batman masks.

• Mr Valentine's Quest

Eastern Daily Press: Stargazing the Norfolk skies as Norwich Astronomical Society run a special half-term event at Fairhaven. Picture: Ian BurtStargazing the Norfolk skies as Norwich Astronomical Society run a special half-term event at Fairhaven. Picture: Ian Burt (Image: Archant)

Gressenhall Farm & Workhouse, February 14-17, 10am-4pm, standard admission prices apply, 01362 860563, gressenhall.museum@norfolk.gov.uk

Mr Valentine has visited Gressenhall Farm and Workhouse but he has lost some of his belongings. Can you help find them all? February half term is a chance to discover more about the historic traditions of Valentine's and this mysterious character.

• Nest Box Building

Oxburgh Hall, Oxborough, February 14-15, 12.30pm-2.30pm, included in normal admission, pre-book 08442 491895, nationaltrust.org.uk

To mark National Nest Box Week this family event is chance to build a nest box for the birds that live in Oxburgh's woodlands. Take a wander through the estate to attach your nest boxes to a tree. Return to check throughout the bird breeding season. Will there be any young?

• Circus Fantasia UK

Yarmouth Stadium, until February 19, 2pm/5pm, £6.50, www.ticketline.co.uk/circus-fantasia

The Circus Fantasia theatre-style big top has been pitched at Yarmouth Stadium for half-term staging a brand new show for 2017 that features the amazing O.G. Juniors from the Hungarian State Circus with their death defying springboard act, S.D. on the aerial net, hand acrobats, hula hoops, chair balancing, the beautiful Miss Reka with her aerial umbrella, hand balancing and lots more, plus masters of mayhem, The Spanish Rivelinos Clowns.

• Knights and Princesses

Framlingham Castle, until February 17, 11am-3pm, £8.40 (£7.60 cons), £5 children, £21.80 family, 01728 724922, www.english-heritage.org.uk

Polish your armour and dust off your tiara and learn the tools of the trade as you become a knight or princess for the day. You're cordially invited to Framlingham Castle where our courtly experts will teach you skills in heroic chivalry and eloquent etiquette - you'd be a jabbering jester to miss it!

• Show the Love

RSPB Titchwell Marsh, until February 19, 10am-2pm, £1 per child, 01485 210779, titchwell@rspb.org.uk

Half-term family activities at Titchwell Marsh include guided walks, self-led nature trails and hands on activities. You can show your love of wildlife by making a bird feeder or mini bug hotel to take home. Take part in the 'nature out of place' nature trail at any point during the week.

• Puddle Jumping Championships

WWT Welney Wetland Centre, until February 19, entry included in admission, 01353 860711, email info.welney@wwt.org.uk

Making a big splash this half-term as WWT Welney Wetland Centre again plays host to the East Anglian Puddle Jumping Championships. The puddles will be set up for you to practice and have fun in during the morning from 10am with the competition from 2pm-3pm. Jumps will be judged on enthusiasm, creativity of the jump and, most importantly, the height of the splash. Everyone who takes part will receive a sticker and the daily winner will go into a draw to become our overall winner. Competition is open to all.

• Bug Week

Dinosaur Adventure, Lenwade, until February 19, 6pm-11pm, included in normal admission £12.30 (£11.30 cons), £13.25 children, under-3s free, 01603 876310, dinosauradventure.co.uk/events

Half-term marks the return of Dinosaur Adventure's ever-popular 'Bug Week', with lots of animals handling and hands-on activities, including prehistoric bug hunt and creepy crawly crafts.

• Nursery Rhyme I-Spy

Wells & Walsingham Railway, until February 19, 10.30am-4.45pm, standard fares, under-4s free, www.wellswalsinghamrailway.co.uk

Wells & Walsingham Railway fires up for 2017 with this fun half-term Nursery Rhyme I-Spy on-board adventure. From the sheet of clues, can you spot the answers down the line as you travel on the smallest public railway in the world?

• Rowdy Romans

Norwich Castle Museum, until February 18, 10.30am-3.30pm, free with museum admission, 01603 495897, museums@norfolk.gov.uk

A week-long series of half-term events with the Romans. Find out about Roman weapons and tactics, explore Roman food, manners, and hygiene, follow a Roman trail around the museum or make something to take home.

Hail Caesar! The Roman Empire is a 20 minutes performance with actor Neil Paris charting the world's greatest empire on February 15 and 17 (performances at 12.30pm, 1.30pm, 2.30pm and 3.30pm). Romans v the Volcano on February 18 (12.30pm/1.30pm/3pm) sees volcanologists from the UEA explaining what the Romans would have seen in 79AD and why it caused such devastation in Pompeii.

• Science Boffins

Beccles Public Hall, February 17, £5, 01502 770060, www.becclespublichall.org.uk

School may be out but that is no reason why science can't be on the half-term agenda as it is made fun as the highly regarded Science Boffins bring their fascinating interactive show to Beccles to entertain children of primary school age upwards. There are fun sessions at 10am, 1pm and 4pm, followed by an-hour long disco and refreshments all included in the cost.

• Night at The Theatre

The Garage, Chapel Field North, Norwich, February 17, 2.30pm, £10-£5, 01603 59864, www.thegarage.org.uk

An accessible dance theatre show, celebrating the creativity in all of us.

When three characters become trapped in a theatre, little do they know that they will soon become the stars of their own show. Combining a mixture of dance theatre and imaginative storytelling with Casson & Friends' trademark interactivity, this dance-theatre show will spark the imagination of children and their grown-ups. Ages 4+

• Teddy Bear Express

Bure Valley Railway, until February 19, 10am-5pm, £13, children free (2 per adult), 01263 733858, bvrw.co.uk

Join the Bure Valley Railway mascot bear for a week of fun. There is free travel for every child accompanied by a fare-paying adult (max 2 children per adult). There is also a children's competition to spot teddy bears on the journey. Don't forget your own teddy!

• Star Night

Fairhaven Woodland and Water Garden, South Walsham, February 18, 7pm-11pm, £3.50, £2 children, 01603 270449, www.fairhavengarden.co.uk

Telescopes at the ready for this evening with the friendly astronomers from Norwich Astronomical Society. Shaun Reynolds will be talking about how to look for the majestic milky way, together with photographing it around Norfolk. Wrap up warm. No torches as it destroys your night vision. Hot food and drinks will be available in the tearoom from 7pm.

• The Snail and the Whale

Great Yarmouth Sea Life Centre, until February 26, included in normal tickets, 01493 330631, visitsealife.com/great-yarmouth

Experience this beloved children's book written by former Children's Laureate Julia Donaldson and illustrated by Axel Scheffler, like never before as they follow the story around Yarmouth's Sea Life Centre through an amazing underwater world. The story of a tiny snail who longs to see the world and hitches a lift on the tail of a whale, you can see some of the real sea creatures that the book's characters meet on their journey.