At the centre of Crowland stands Trinity Bridge, a one-of-a-kind 14th-century stone bridge that once spanned the meeting point of two rivers and a stream. Built in a unique three-way design, it connected the causeways leading from Crowland to Peterborough, Spalding, and Stamford, serving as a vital crossing point for trade and pilgrims travelling across the marshes.
After the fenland waterways were redirected during large-scale drainage works, the bridge was left high and dry, preserved as a monument to medieval engineering ingenuity. Today, it offers visitors a tangible link to the era when waterways were the lifeblood of the Fenlands and when Peterborough’s fortunes were deeply tied to the fen-edge settlements.