Yorkshire Day will take place on Monday, August 1.
The popular venue’s traditional celebrations includes the Chairman of East Riding of Yorkshire Council, Councillor John Whittle, reading the Proclamation at 11.47am.
There will be the chance to take part in Yorkshire pudding and spoon races; make a Yorkshire flag; listen to local music by The Assembly Line in The Orangery; watch the Makara Morris Dancers; and take part in a Rusticus Encounter with the charismatic Pirate Captain.
There will also be flat cap flinging, and in the Edwardian kitchen, there will be some recipes from the archive to take home.
A spokesman said: “For details of all events in the six-week Summer of Fun, and all facilities, including the zoo, gardens, outdoor activities, and the Clock Tower Café, plus opening times and admission prices, visit www.sewerbyhall.co.uk.”