Health and wellbeing will be promoted by the newly formed Healthy Peacehaven Network at the grand opening of the Big Park on Saturday March 7.
Sussex Community Development Association (SCDA) is working with a number of local organisations and groups, particularly Peacehaven Town Council and local GPs, to establish the group.
It is part of an East Sussex Public Health funded project to tackle health issues in the area.
The group aims to form a network of groups and individuals to work together to address health inequalities in the town, such as obesity and mental health, depression and social isolation.
The group had its first meeting last October.
It teamed up with Lewes District Council and Peacehaven Town Council to hold this event to coincide with the opening of the Big Park in Piddinghoe Avenue as this facility will help tackle health issues.
The Healthy Peacehaven marquee at the event will feature healthy eating, Wave Leisure, exercise, health trainers, local health groups and blood pressure and diabetes testing.
There will also be information about fuel poverty, cycle groups, community gardening and local patient groups.
The Health Network is hoping that the event will be the start of a long partnership in the town which will grow to begin to make Peacehaven an even healthier place to live.
The Big Park, or Centenary Park, will be officially opened by MP Simon Kirby on Saturday March 7.
There will be special activities throughout the day from 11am to 4pm, including circus skills, bike rides, walks and face painting.