Dartmouth Castle | English HeritageBeautifully located fortresses on the edge of the river. For over 600 years Dartmouth Castle has guarded the Dart Estuary and the busy, vibrant port of Dartmouth.HISTORY-MAKING DAYS OUT FROM £8.50 PER ADULT Surrounded by sparkling waters, Dartmouth is one of the most beautifully located fortresses in England. For over 600 years, the castle has guarded the narrow entrance to the Dart Estuary and the busy, vibrant https://www.english-heritage.org.uk/visit/places/dartmouth-castle/