Keighley's Cliffe Castle will re-open to the public on Saturday, 5 February with new exhibitions and a restored great drawing room.
The Bradford Council-run museum closed last November due to structural damage caused when rain water poured in following a series of lead thefts from the roof. Fortunately none of the collections were affected but Victorian ceilings and wiring were damaged and 11 areas of the museum were affected.
Bradford Council has now installed CCTV cameras which have already led to arrests and replaced the lead with a synthetic membrane. Coun Paul Flowers, Bradford Council's executive member for sport and leisure, said: "Staff, volunteers and plaster, gilding and textile specialists have worked together to save Cliffe Castle's important Victorian interiors and I hope visitors will go along and see the restoration.
"Also the Friends of Cliffe Castle are helping fund the ongoing restoration in the National History Gallery where historic friezes were discovered. The white gloss paint has been replaced with rosy reds and rich olive greens and gilded highlights on the walls and cornices which will give a sense of its 1880s glamour.
"More than 75,000 people a year visit Cliffe Castle and I'm sure they will be pleased with what has been done to the museum which has inspired designers, artists and scholars for many years."
Visitors to the museum can enjoy two new exhibitions. Local school children will have their work on display in a Good Start exhibition after working with the museum's artist in residence and people can see FLAX , a show by home grown textile artists. Cliffe Castle's shop has also been refurbished.