Paxton's Tower is a Neo-Gothic folly erected in honour of Lord Nelson. It is situated on a hilltop near Llanarthney in the Towy Valley, Carmarthenshire, Wales. It is a visitor attraction that can be combined with a visit to the nearby National Botanic Garden of Wales. Its hilltop location provides views over the Botanic Gardens and the Towy valley. The tower is under care of the National Trust for Places of Historic Interest or Natural Beauty and is a grade II* listed building.