Haverfordwest Castle will be closed off for safety reasons during the regeneration project work.
Recent storms causing damage to the Castle’s two flagpoles has lead to their temporary removal.
Due to the imminent start date for conservation works at the Castle, replacement flagpoles will not be erected until the Castle development project is complete.
Works at Haverfordwest Castle will include a new flagpole solution, which will be more durable and easier to replace when needed.
A Pembrokeshire County Council spokespetson said: “We will continue to fly flags at County Hall, marking all official dates, but look forward to the completion of the Castle scheme when flags can once again be flown from this iconic setting.
“A sustainable solution to ensure any future repairs to the flagpoles is easier and quicker to carry out, will be included in the scheme.”
The Castle development project is funded by UK Government’s Levelling Up Fund with match funding from Pembrokeshire County Council.
Further funding is being sought for the fit out of the attraction and associated community activities.