The trees (inset) were felled and are due to be replaced by lime trees
An avenue of horse chestnut trees planted in the 1930s at Avebury, Wiltshire, have been felled after becoming diseased.
The National Trust said the trees had phytopthora or "bleeding canker" and despite its efforts it was not possible to save them.
"We will be replacing them with lime trees which are well-suited to the area," a trust spokeswoman said.
The avenue which runs by the A4361, was planted by Alexander Keiller in 1937.
He was the archaeologist and businessman who founded the Alexander Keiller Museum at the nearby World Heritage Site.
The southern end of the avenue is owned by the National Trust, the rest by a local landowner.