Woodhall Spa is a former spa town and civil parish in the East Lindsey district of Lincolnshire, England, on the southern edge of the Lincolnshire Wolds, 6 miles (10 km) south-west of Horncastle, 23 miles (37 km) west of Skegness, 15 miles (24 km) east-south-east of Lincoln and 17 miles (27 km) north-west of Boston. It is noted for its mineral springs, historic cinema and its Second World War association with the RAF 617 Squadron, commonly referred to as 'The Dambusters'.
Much of the village's Victorian elegance remains, with large parts of the centre being designated as a conservation area since January 1991.
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