In the late 18th and early 19th centuries, Freiston's sandy shore on The Wash was developed as a sea bathing resort.

However, the process of coastal accretion caused a salt marsh to develop, leaving hotels without customers.

The remains of these fortifications can be seen today including a Ruck machine gun post, of a type once widespread in Lincolnshire.

Freiston Shore is home to pied avocets, common redshanks, ringed plovers, northern wheatears and marsh harriers in spring and summer.

In the autumn and winter migrating waders such as common redshanks, ruddy turnstones, dunlins, and waterfowl such as dark-bellied brent goose and Eurasian wigeon, can be seen.