Уэльстің ботаникалық бағы – тарих пен табиғаттың керемет үйлесімі

Botanical garden in Llanarthney, Carmarthenshire, Wales

The National Botanic Garden of Wales (Gardd Fotaneg Genedlaethol Cymru) is a botanical garden located in Llanarthney in the River Tywi valley, Carmarthenshire, Wales. The garden is both a visitor attraction and a centre for botanical research and conservation, and features the world's largest single span glasshouse, measuring long by wide. The National Botanic Garden of Wales seeks "to develop a viable world class national botanic garden dedicated to the research and conservation of biodiversity, lifelong learning and the enjoyment of the visitor." The garden is a registered charity reliant upon funding from visitors, friends, grants and gifts. Significant start up costs were shared with the UK Millennium Fund.

The Middleton family built a mansion here in the early 17th century. In 1789 Sir William Paxton bought the estate for £40,000 to create a water park. He used his great wealth to employ some of the finest creative minds of his day, including the eminent architect Samuel Pepys Cockerell, whom he commissioned to design and build a new Middleton Hall, turning the original one into a farm. The new Middleton Hall became ‘one of the most splendid mansions in South Wales’ which ‘far eclipsed the proudest of the Cambrian mansions in Asiatic pomp and splendour’. Paxton created an ingenious water park. Water flowed around the estate via a system of interconnecting lakes, ponds and streams linked by a network of dams, water sluices, bridges and cascades. Spring water was stored in elevated reservoirs that fed into a lead cistern on the mansion's roof, allowing Paxton's residence to enjoy piped running water and the very latest luxury, water closets. In 1806, Paxton engaged Pepys Cockerell again to design and then oversee the construction of Paxton's Tower on the estate, which was completed in 1809. A Neo Gothic folly erected in honour of Lord Nelson, it is situated on a hilltop near Llanarthney in the Towy Valley. Today the folly is now owned by the National Trust. By the time of Paxton's death in 1824, Middleton Hall estate covered some The sale agents engaged that year described the estate thus in their catalogue:

Middleton Hall estate was sold to Jamaican born West India merchant, Edward Hamlin Adams, for £54,700. Adams, neither a gardener nor a lover of water features, added buildings that aided his love of country sports, but let the bath houses fall into disrepair. Of the gardens, only those immediately visible from the house were maintained. In 1842 the estate passed into the hands of his eccentric son Edward, who immediately changed his name from Adams into the Welsh form Abadam. Not loving the country or gardens, according to his estate manager Thomas Cooke, Edward was a social nightmare. As his son predeceased him, on his death in 1875 the estate passed to his eldest daughter, Lucy, then next sister Adah who had married into the local Hughes family. In 1919 the estate changed hands again when Major William J. H. Hughes sold it to Colonel William N. Jones. Edward Abadam's youngest daughter, Alice, was a leading suffragist, and a blue plaque to her was unveiled in 2018, the centenary of women's suffrage, in the gardens of what had been Middleton Hall, her childhood home, by her great niece Margaret Vaughan. In 1931, the mansion was completely gutted by fire, leaving only the walls standing, themselves covered in globules of molten lead from the melted roof. After this the estate fell into decline, and 20 years later the walls of the main house were pulled down. The site was then bought by Carmarthenshire County Council, and leased to young farmers hoping to make their way into an agricultural career.

In 1978, interest had been captured by local walkers, who were keen to revive the splendour of what they could see around them. Setting up a fund raising scheme, the little money raised led to the rediscovery of a number of historical features. Virtually on the site of Cockerell's mansion, the Great Glasshouse now forms the centrepiece. Much of the original waterscape has been restored, and extended by introducing cascades to the western approach to the Glasshouse. The extraordinary original view the east side of the mansion offered over the grounds has been restored, extending as originally to Paxton's Tower in the distance. Many experts have commented that this view gives visitors an ability to see and hence understand something of what the great landscape architects of the end of the eighteenth century understood by the word "picturesque". The garden was opened to the public for the first time on 24 May 2000, and was officially opened on 21 July by Charles, Prince of Wales. In 2003, the garden ran into serious financial difficulties, and in 2004 it accepted a financial package from the Welsh Assembly Government, Carmarthenshire County Council and the Millennium Commission to secure its future. The site extends to , and among the garden's rare and threatened plants is the whitebeam Sorbus leyana. With many plant exhibits now fully mature, and exhibits and activities to attract younger visitors, three quarters of income is now self generated, with the remaining quarter in grants. In 2019, there were 160,000 visitors, quoted as being a "sustainable average".

Constructed virtually on the same site as Paxton's new but now demolished Middleton Hall, the Great Glasshouse, designed by Foster and Partners, is the largest structure of its kind in the world. The structure is long and wide, with a roof containing 785 panes of glass. Housing plants from several Mediterranean climate regions, the plants are divided into sections from Chile, Western Australia, South Africa, California, the Canary Islands and the Mediterranean itself. In 2007, a new tropical glasshouse, designed by Welsh architect John Belle, was opened to continue the classification displays with tropical monocotyledons. In 2015 a large collection of Welsh apple varieties was planted. A Welsh pomona (annotated survey) is planned.

The Waun Las national nature reserve is accessed from the garden and comprises some of wildflower meadows and pastures.

The domed greenhouse scenes of the Doctor Who episode The Waters of Mars (2009), were filmed in the glasshouse of the garden.