Sir Seewoosagur Ramgoolam Botanical Garden

The garden's most celebrated feature is the long central pond of Victoria amazonica giant water lilies, their pads so large and structurally sophisticated — with their distinctive upturned rims and venous undersides — that they appear to be made of a material other than plant tissue, and viewing them from the bridge that crosses the pond at its midpoint is the single image that defines the garden in most visitor accounts.

Pierre Poivre, the French horticulturist who established the garden in 1770, was driven by a strategic obsession with breaking the Dutch monopoly on the spice trade; his introduction of spice seedlings from the Moluccas to Mauritius and subsequently to the French colonial territories in the Indian Ocean and Caribbean was one of the most consequential acts of biological engineering in 18th-century colonial history.

The garden covers 37 hectares and was for a long period ranked third among the world's finest botanical gardens; the collection spans palms from Madagascar, cycads from Africa, bamboo from Asia and a remarkable stand of the Talipot palm, Corypha umbraculifera, whose solitary inflorescence rises to 6 metres before the tree dies — an event that occurs only once in the tree's 30-70 year life cycle.

The entrance avenue is lined with mature banyan trees whose aerial roots descend from the branches to the ground and thicken into secondary trunks, creating a cathedral-vaulted tunnel of root arches that frames the view of the central lake in a way that has changed little since the French colonial period.

The garden is also a wildlife habitat: populations of the endangered Mauritius fruit bat roost in the tallest palms, and the pond supports a population of large softshell turtles that can be seen basking on the margins; the combination of botanical heritage and active wildlife gives the site a living quality that distinguishes it from purely ornamental gardens.

A small cemetery near the garden's eastern gate contains the grave of Pierre Poivre himself, a simple stone monument that acknowledges his role in establishing what is still, two and a half centuries later, one of the most important plant collections in the southern Indian Ocean.

The garden's age and its position near the capital mean that it absorbed and retained botanical introductions from across the colonial networks of the 18th and 19th centuries — French, British and Creole — in a way that newer gardens in the region could not replicate, giving it a species diversity that reflects global trading routes as much as regional ecology.

It is the oldest botanical garden in the Southern Hemisphere and the third oldest in the world after Leiden and Kew, giving it a depth of mature tree cover that no other garden in the region can match.

The Victoria amazonica water lily collection is among the finest in the world outside of dedicated tropical greenhouse collections in European botanical gardens.

The garden is a living archive of 18th and 19th century colonial plant introductions and tells the story of global spice trade horticulture as effectively as any museum.