“The view is spectacular,” Rome Mayor Roberto Gualtieri said at the unveiling of the walkway.
The walkway will remain in place until December while maintenance work is carried out to remove limestone deposits and filth.
The temporary addition to the monument will accommodate about 130 people at a time, Gualtieri said.
It will be open every day from 9 a.m. until 9 p.m., except for Monday and Friday when opening hours will be from 11 a.m. to 9 p.m.
The catwalk had already been used in 2014 during restoration work that lasted two years, the mayor said.
A small pool has been installed next to the catwalk so tourists can keep up the tradition of tossing coins for good luck while the fountain’s basin is sealed off.
Rome is gearing up for the Jubilee, when over 30 million tourists are expected to visit for the Catholic Church’s Holy Year.
ANSA