A grey phone box overlooking Bath's Royal Crescent in among 800 new structures in the city which have been listed.
More than 2,300 structures in Bath - including the Royal Crescent itself - are on the protected list.
The latest additions include 29 monuments in the Abbey Cemetery and 15 monuments in All Saints Churchyard.
Listed structures are protected by law against unauthorised demolition, alteration or extension.
English Heritage, which helped compile the list, said many of the additions were publicly owned but would consult with any other owners whose buildings feature in the register.
Caroline Kay, from the Bath Preservation Trust, said listing items was about trying to preserve the past.
"Listing is not just about architectural interest - though much of Bath is about the architecture - it's also about historic interest.
"You could say a phone box in the Royal Crescent comes into that category."
Protection of buildings in Bath began with the 1937 City of Bath Act before national listing began in 1950.
The latest update is the first change to the list since 1975.
Bath is the only entire British city to have been awarded World Heritage Site status.