The Saumarez Park Japanese pavilion has been under construction this summer to replace the original structure.
The new one will be able to be accessed by a wider portion of the community.
Built in the 1930s, the original one was not accessible for people with disabilities.
The replacement includes handrails and evenly levelled groundworks.
‘Throughout the construction we have endeavoured to keep the new pavilion as closely aligned to the original as possible to honour and preserve its Japanese heritage and the local history of the park,’ said project manager Nigel Dorey.
‘But we felt it was important to digress from its historical architecture in this small but meaningful way so that it can be enjoyed by all.
‘It’s been very exciting to see the pavilion brought back to life again.’
Access for All founder Karen Blanchford said she was pleased that the bridge has been added to make the attraction more accessible to everyone in Guernsey.
‘Ensuring as many members of the community as possible can access attractions, parks and all areas of island life is crucial to inclusion. We look forward to its unveiling,’ she said.
The Rotary Club of Guernsey led the restoration project, and sponsorship was provided by Butterfield, Resolution IT, the John Ramplin Charity Trust and Castel parish.
n The opening ceremony is at 5.30pm