Tel: 01983 855397

The Tunnel

Our regular Tunnel Tours are currently postponed. Please email if you'd like to enquire about a private tour.

Ventnor Botanic Garden has many secrets, some dating back to the days of the Royal National Hospital that formerly stood on the site. Underground caverns, secret passageways and a tunnel through the cliff can be found by the visitors to the Garden.

A proposal to dig a tunnel from the gardens down to the shore was mooted in the late 1800s.  The Royal National Hospital annual report for 1875 states that “There can be no doubt that if the patients were able to obtain free access to the shore it would be very conducive alike to their recovery and their enjoyment.” Money for the tunnel at that time was not forthcoming and although it was built later, its function was by no means the rather romantic conception that has given rise to a good deal of speculation and comment; it was in fact used as a conduit for rubbish that was propelled through it and dumped into the sea. Steel tramlines are still visible on the floor. Exactly when the tunnel was built is unknown; possibly it was in relation to a new system of drainage and sewage disposal that was completed sometime in the 1880s. The tunnel was closed at both ends in 1940.

The 350 foot long vaulted roofed tunnel exits through the cliff midway down and is inaccessible. DO NOT attempt to locate the exit, or try to enter unless with one of our guides, as the cliff is extremely dangerous. Bolted gates are also in place for safety.


The Heritage Centre

At the foyer outside edulis restaurant, is our exhibition of artefacts, photographs and curious facts, displayed to illustrate the heritage of Ventnor Botanic Garden, formerly the National Hospital for Diseases of the Chest.

The importance of our microclimate

The history of Ventnor Botanic Garden starts and stops with its microclimate. We are 5C hotter than the rest of the Isle of Wight and the UK mainland; hence ‘Britain’s Hottest Garden’. As such we are a bellwether for climate change, for what is likely to grow and not grow in UK gardens in the future. From the Canna Lilies we no longer lift in winter to the plants that we alone can grow outdoors in the UK we take pushing the boundaries of half hardiness seriously. We rarely get a frost and if we do the Garden heats quickly when the sun returns due to the temperature buffer of the English Channel, the south facing aspect of the Undercliff, and the shelter from north winds which pass overhead.

A history of healing

The micro-climate originally attracted the National Hospital for Diseases of the Chest in the 1860’s and 150 years later the health giving attributes of the microclimate continue to benefit VBG plants and Garden visitors. Dr Arthur Hill Hassall, a polymath of his times, visited Ventnor to recuperate from an illness and foresaw the role the micro climate could play in alleviating the scourge of the day – tuberculosis. Over time families stepped up as benefactors to build the hospital wings or blocks as they came to be called. Each family had their crest installed over the entry door of the block they financed. These crests are on display today in our edulis Restaurant.

An eye to the future

In our way of thinking saving VBG for future generations means standing firmly on the shoulders of the past. We believe the role of the botanic gardens will become more and more appreciated over time as safeguarding the world’s flora becomes a priority. We are proud to have kept this small, provincial garden on the map.

Contact us

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Tel: 01983 855397  |  Ventnor Botanic Garden Community Company C.I.C  | Company Number: 07976468 | Registered Address: Undercliff Drive, Ventnor, Isle of Wight, PO38 1UL