In a world dominated by dense skylines and heavy traffic, a new ranking highlights the cities that are doing the opposite – putting nature, air quality and livability at the center of urban life.
According to a new Green City Index by Iglu, Oslo has been named the greenest city in the world, outperforming global competitors thanks to its exceptional access to nature and clean air.
Despite being home to more than 724,000 residents, Oslo scored an impressive 77.3 out of 100. Remarkably, 95 percent of locals live within just 300 metres of green space – a benchmark few major cities can match.
The Norwegian capital has taken a proactive approach to sustainability. One of its most distinctive initiatives is the “bee highway,” launched in 2015, which created a network of flower corridors and green rooftops to support pollinators. Pocket parks – small green areas created from former parking spaces – are also widely integrated into the urban landscape.
In second place is Vilnius, which scored 72.3. The city has gained international recognition for its investment in green public transport and expanding outdoor spaces, earning the title of European Green Capital for 2025.
Helsinki ranked third with a score of 60.3, followed by Vienna in fourth place. Canberra secured fifth, reinforcing Australia’s strong showing in urban sustainability.
Other cities rounding out the top 10 include Sydney, Stockholm, Singapore, Reading and Munich.
The UK’s Reading stood out as the greenest location in the country, ranking ninth overall. Around 35 percent of its area is dedicated to public green space, while projects like the “Rivers and Parks” initiative connect the Thames and Kennett rivers directly to the town center. Historic sites such as the Abbey Quarter blend seamlessly with landscaped gardens like Forbury Gardens, creating a balance between heritage and nature.
As cities worldwide face growing pressure from urbanization and climate change, the index reflects a broader shift – where access to green space, clean air and sustainable planning is becoming as important as economic growth itself.
Image will zhang from Pixabay.
