The National Trust for Scotland has reduced the number of redundancies it will make after carrying out a consultation with staff.
The trust said in March that it expected to make more than 90 staff redundant as part of wide-ranging money-saving measures.
But after consultation with staff through the trade union Prospect and other external stakeholders, the trust has said it will make 44 compulsory redundancies and 21 voluntary redundancies from a workforce of 487.
It has made additional savings through reducing working hours for some of its seasonal staff, which peaks at about 800 people.
It has confirmed that four of 11 properties that were at risk of shutting down - Hutchesons' Hall in Glasgow, Leith Hall in Aberdeenshire, Hill of Tarvit Mansion House in Fife and the visitor centre at the Ben Lawers National Nature Reserve in Perthshire - will close.
Kate Mavor, chief executive of the National Trust for Scotland, said the changes put the trust in a stronger financial position.
"Our primary concern is the protection of Scotland's heritage for future generations," she said. "We have done the right thing to safeguard our 130 properties and enable us to focus on our world-class conservation work."