National Trust venues across the region are opening their doors for free as part of its campaign, 50 things to do before you're 11¾ which aims to encourage children to enjoy outdoor pursuits.
The Trust has published a list of 50 things to do before you're 12, including building a den, skimming a stone, making a mud pie and flying a kite.
Venues across the region will have free entry on April 21 and April 22.
More top news
Feeling very cold and mostly sunny today with some snow showers overnight. Top temperatures reaching only 2 deg C (36 deg F)
It will be a dry day with plenty of sunshine for most. Some light snow showers are expected to reach the coast during the evening.
A Cambridgeshire animal rescue centre says it's seeing more cats being abandoned in life-threatening conditions.