Olives, opera and a climate-neutral goal: How a mural in Greece won ‘Best in the World'

KALAMATA, Greece — Long known for its olives and seaside charm, the southern Greek city of Kalamata has found itself in the spotlight thanks to a towering mural that reimagines legendary soprano Maria Callas as an allegory for the city itself.

The massive artwork on the side of a prominent building in the city center has been named 2025's ''Best Mural of the World'' by Street Art Cities, a global platform celebrating street art.

Residents of Kalamata, approximately 240 kilometers (150 miles) southwest of Athens, cultivate the world-renowned olives, figs and grapes that feature prominently on the mural.

That was precisely the point.

Vassilis Papaefstathiou, deputy mayor of strategic planning and climate neutrality, explained Kalamata is one of the few Greek cities with the ambitious goal of becoming climate-neutral by 2030. He and other city leaders wanted a way to make abstract concepts, including sustainable development, agri-food initiatives, and local economic growth, more tangible for the city's nearly 73,000 residents.

That's how the idea of a massive mural in a public space was born.

''We wanted it to reflect a very clear and distinct message of what sustainable development means for a regional city such as Kalamata,'' Papaefstathiou said. ''We wanted to create an image that combines the humble products of the land, such as olives and olive oil — which, let's be honest, are famous all over the world and have put Kalamata on the map — with the high-level art.''

Southern Greece has faced heatwaves, droughts and wildfires in recent years, all of which affect the olive groves on which the region's economy is hugely dependent.

The image chosen to represent the city was Maria Callas, widely hailed as one of the greatest opera singers of the 20th century and revered in Greece as a national cultural symbol. She may have been born in New York to Greek immigrant parents, but her father came from a village south of Kalamata. For locals, she is one of their own.

This connection is also reflected in practice: the alumni association at Kalamata's music school is named for Callas, and the cultural center houses an exhibition dedicated to her, which includes letters from her personal archive.

Artist Kleomenis Kostopoulos, 52, said the mural ''is not actually called ‘Maria Callas,' but ‘Kalamata' and my attempt was to paint Kalamata (the city) allegorically.''

Rather than portraying a stylized image of the diva, Kostopoulos said he aimed for a more grounded and human depiction. He incorporated elements that connect the people to their land: tree branches — which he considers the above-ground extension of roots — birds native to the area, and the well-known agricultural products.

Creating the mural was no small feat. Kostopoulos said it took around two weeks of actual work spread over a month due to bad weather. He primarily used brushes but also incorporated spray paint and a cherry-picker to reach all edges of the massive wall.

Papaefstathiou, the deputy mayor, said the mural has become a focal point.

''We believe this mural has helped us significantly in many ways, including in strengthening the city's promotion as a tourist destination,'' he said.

Beyond tourism, the mural has sparked conversations about art in public spaces. More building owners in Kalamata have already expressed interest in hosting murals.

''All of us — residents, and I personally — feel immense pride,'' said tourism educator Dimitra Kourmouli.

''We see that such modern interventions in public space bring tremendous cultural, social, educational and economic benefits to a place,'' he said. ''These are good springboards to start nice conversations that I hope someday will happen in our country, as well.''

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