Hi Maria
Depending on how far you wish to travel there is always Brockhole Country Park in Winderemere its fab for walks along the edge of the shores of windermere, theres an adventure playground, for the bigger kids as well as the littletons
Brilliant slides there, even I tried them out :wink: Its free to get in just your parking fee, which isn't that much, takes about 1hr 15min to get there, the scenery is lovely, people are friendly I give it 10/10