A topping out ceremony will be held today to mark the completion of the main structure of the £25m radiotherapy centre being built at Colchester General Hospital.
Radiotherapy Manager Sonia Tankard and Head of Radiotherapy Physics Mark Porter will hoist a branch of a fir tree to the highest point of the two-storey building - a traditional construction industry ritual to bring good luck.
Dr Sally Irvine, Chair of Colchester Hospital University NHS Foundation Trust, said: "The topping out ceremony marks a significant milestone in the development of this major project, which is on schedule and within budget.
"The new centre will include the most up-to-date equipment and is tremendous news for the people of north east and mid-Essex for whom we provide radiotherapy services."
The new development will replace the current radiotherapy centre at Essex County Hospital.