The garden was established through a legacy donation by Alexandros Diomedes, a former Prime Minister of Greece.
It is the largest botanical garden in the Eastern Mediterranean region.
The grounds contain over 2,500 different plant species from every continent.
The historic section retains elements of the ancient landscape, including remains related to the route of the Eleusinian Mysteries.
It operates as a non-profit foundation supervised by the National and Kapodistrian University of Athens.
The Diomidous Botanical Garden, also known as the National Botanical Garden of Greece, spans 1,860 acres and serves as a major horticultural research center. It is located at the historical site of the Sacred Way (Iera Odos), the ancient road connecting Athens to Eleusis. The grounds feature a historical section, a systematic garden, and an extensive collection of Mediterranean flora. Visitors can explore diverse zones including palm groves, succulent collections, and an arboretum with trees from across the globe. The garden functions under the University of Athens, prioritizing the preservation of endemic Greek plant species. A prominent lily pond serves as a central feature, alongside winding pathways that transition through distinct climatic planting zones. On-site facilities include cafes for refreshment. The garden serves both as a public recreational space and an academic facility for botanical studies.
The wooden bridge overlooking the lily pond during the flowering season.
Bring comfortable walking shoes, as the perimeter is extensive and involves significant ground coverage.
Carry insect repellent during warmer months, as the dense vegetation and pond areas attract mosquitoes.
Bring a water bottle to refill at fountains located along the main paths.
Avoid visiting during mid-day in summer, as there is limited shade in the open arboretum sections.
Closed on specific public holidays; partial closures may occur during extreme weather conditions for safety.
Stay on marked trails to protect the scientific plant collections; do not pick flowers or samples.
