Why the world's oldest academic botanical garden was built behind a high wall

Why the world's oldest academic botanical garden was built behind a high wall
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In short: Founded in 1545 to cultivate medicinal herbs, the Orto Botanico di Padova remains in its original location in Italy. Its unique circular design was once protected by a high wall to deter persistent night thieves, a testament to the immense value placed on these rare, life-saving botanical specimens.

Established by the Venetian Republic in June 1545, the Orto Botanico di Padova is the oldest academic botanical garden still occupying its original site. While often attributed to Andrea Moroni, the garden's true architect was Daniele Barbaro, a learned nobleman who designed the space as a perfect square within a circle, measuring 84 meters in diameter. This layout, inspired by medieval enclosed gardens, served a critical academic purpose: helping students distinguish genuine medicinal plants from dangerous lookalikes to prevent medical errors.

The garden's security was a major concern from its inception. Frequent night thefts of valuable plants necessitated the construction of a circular enclosure wall, despite the threat of severe penalties like prison or exile. Over the centuries, the site was enriched with exotic species brought through Venetian trade routes. By the 18th century, the garden featured sophisticated irrigation systems, including a massive wheel hydrophore and a water-bearing stratum tapped 300 meters below ground to feed its central aquatic pool.

Today, the garden serves as a living museum of scientific history and a UNESCO World Heritage Site. It houses remarkable specimens, including a Mediterranean dwarf palm planted in 1585, known as 'Goethe's palm,' and a ginkgo tree dating to 1750. The collections are organized by taxonomic, historical, and ecological standards, ranging from insectivorous plants to a reconstructed desert habitat. Beyond its aesthetic appeal, the garden continues to function as a hub for intensive research, preservation of endangered species, and the study of the complex relationship between nature and human culture.

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