Dunedin Mayor Dave Cull said Dunedin City Council-owned amenities Wall Street mall, Dunedin Town Hall and the museum were lit up in green at night during the holiday weekend to signal support for climate action.
The Regent Theatre was also supporting the stand by bathing its building in green.
The council and theatre were following the example of nearly 200 mayors in the United States in signalling support for the agreement, Mr Cull said.
The American cities had committed to upholding the goals ``enshrined'' in the agreement by creating a National Climate Action Agenda, Mr Cull said.
The mayors were pushing for new action to meet the 1.5degC target and a clean-energy economy.
Mr Cull said it was ``important'' to show support for the agreement and to join with ``green cities''.
``Many cities around the world are committing to ambitious targets to reduce greenhouse gas emissions, share lessons and hold each other accountable.''
Dunedin had stopped investing in fossil fuels and had set its own targets to reduce emissions, he said.
