Welwyn is a village situated in the valley of the River Mimran in Hertfordshire. It is sometimes called Old Welwyn to separate it from the newer settlement of Welwyn Garden City, situated a mile south.
The village has a brief encounter with artist Vincent Van Gogh, who walked here from London to visit his sister whilst she was staying in Welwyn. This celebrated on a blue plaque on the building she stayed at in Church Street.
On the outskirts of the town lay a Roman bath house which was once part of a Villa. These were excavated by Tony Rook in the 1960s and volunteers of the Welwyn Archaeological Society. The bath is now run by the Welwyn Hatfield Museum Service who open the site up to the public from January to November.