A £3.2m plan to redevelop Clitheroe Castle and museum is being unveiled at a public meeting in the town.
Clitheroe Castle has dominated the town's skyline for 800 years
The Heritage Lottery Fund (HLF) approved a £2m bid towards the revamp of the buildings in December.
The renovation plans include building a glass atrium between the castle museum and the North West Sound Archive with a cafe and interactive displays.
Council officers involved in the plan will be answering questions at the Council Chamber in Church Street.
Ribble Valley Borough Council has pledged £250,000 towards the castle project, while a further £150,000 has been pledged by the SITA Trust, an organisation which provides funds for community improvement projects.
The council said a group called Clitheroe the Future is poised to put £250,000 in the pot on behalf of the North West Development Agency. A fundraising drive in the private sector has also attracted further pledges.
The meeting will take place at 1830 BST.