Extinction Rebellion Bath has placed banners across Pulteney Bridge to highlight the issue of Climate Change.
The activists are calling for the government to commit to hitting their net-zero emissions target.
They say according to the government's own report, only four of the 21 vital measures to achieve net-zero emissions are on track.
The group is also calling for the post-covid economic recovery to focus on green jobs and technology.
Ros Pears came up with the idea and plans to stay in a kayak alongside the banners for the rest of the day.
She said: “We recognise some may be offended by the wording but we wanted a message that would make people sit up and take notice."
Another Extinction Rebellion member, Mat Thomas added: "The team was careful not to cause damage to the bridge."
"We recognise it’s a World Heritage monument but there is no heritage on a dead planet.”
“As the pandemic continues we mustn’t forget the far larger and growing threat of climate breakdown.”