Thousands turn out for climate change rally in Treasury Gardens A crowd estimated at 25,000 listen to speakers during the Melbourne Climate Rally in the Treasury Gardens Melbourne. THOUSANDS have turned out at Melbourne's Treasury Gardens to rally for action against climate change. Warm weather helped Melbourne reach the biggest crowd in the country as simultaneous rallies were held around Australia. The event, organised by activist group GetUp and supported by the Labor Party, was held to call on state and federal Governments to act on climate change. "Our leaders have made climate change a political football, but Australians today showed they're ready to get out, rain, hail or shine, to get it back on track," GetUp director Sam Mclean said. This is one of the biggest, most diverse and widespread calls for action on climate change Australia's ever seen. More than 10,000 Melburnians attended the rally with estimates the crowd swelled to up to 30,000. Another 10,000 braved heavy rain in Sydney and 5000 also attended in Brisbane.