Urban rooftop gardens are transforming city skylines into thriving ecosystems. By converting unused roof space into green oases, residents can grow fresh produce, improve air quality, and create habitats for pollinators. These gardens also help mitigate the urban heat island effect, reduce stormwater runoff, and provide residents with relaxing outdoor spaces. Successful implementations in cities like New York, Tokyo, and Copenhagen demonstrate the potential for rooftops to contribute to sustainable urban living. Community initiatives, supportive policies, and innovative lightweight soil media are key factors driving this green movement.