The National Trust is to apply for more than £2.5m of lottery money to enhance visitor facilities at a Roman villa in Gloucestershire.
An impression of how the mosaics could be sheltered
The trust also wants to protect the mosaics, and what remains at the site of Chedworth Roman Villa.
The structure dates back to the 4th Century, but its mosaics are protected by wooden shelters put up during the Victorian era.
The full cost of the work has been estimated at £5m.
Janet Gough, from the trust, said: "If our bid is successful, it will allow us to improve the way we look after the villa and improve facilities for visitors, staff and volunteers.
"The area under protective cover would be extended and we would be able provide the conditions needed to re-expose and display currently buried mosaics.
"In addition, we would plan to create better physical access to the site, mosaics and collection, improve interpretation and the facilities for the learning programme, as well as staff offices and facilities.