An interesting town in The Fens is Boston (pop. 33,900). This English town in Lincolnshire gave its name to the American town of Boston in Massachussetts (originally "Botolph's Town"). Lying 6mi/9km from the mouth of the Witham, it was at one time England's second largest seaport. It is the administrative center of the Fen district known as
"Holland".
A notable landmark in Boston is the parish church known as The Stump. It has the 14th highest tower in England. There is also a seven storey windmill, Maud Foster Windmill completed in 1819.
The Boston May Fair is held every year, since 1125, during the first week in May.