Her Royal Highness The Princess Royal will be attending a service of dedication at Boston Stump next month to mark restoration work at the church.
Princess Anne, who is patron of the Boston Stump Restoration Appeal, has agreed to take part in a dedication service for the restored Cotton Chapel and Australian Memorial.
The event takes place on Monday, June 8.
A spokesman for the church said: “After the short service, she will view the restored Australian Memorial which is dedicated to the early explorers of Australia from the Boston area, including George Bass, Joseph Banks and Matthew Flinders among many others.
“She will then be shown the progress we have made on a Heritage Lottery Funding bid we are in the process of producing.”
He added: “Her Royal Highness will then move on to be shown the immense amount of work that has taken place in the restoration of the Cotton Chapel which is dedicated to the Rev John Cotton.
“The Rev Cotton presided at St Botolph’s during the early 1600s before leaving for America in 1633 and helping the first settlers to establish Boston Massachusetts.
“Finally she will move outside to be shown the temporary heating system we have installed post the flood of 2013, the proposed location of the new boiler house and high tide mark on the Tower West wall.”
The visit is scheduled to run from 2.15pm to 3.45pm, but is a closed event and as such is not open to the general public, the spokesman added.