Railworld Wildlife Haven is a small railway-themed attraction and nature project near the Nene, close to the city centre. It is quirky rather than slick, mixing model railways, environmental displays, and a reclaimed wildlife area.
It works best for families, railway enthusiasts, or anyone with an affection for local volunteer-run places. Pair it with the Nene Valley Railway if you want Peterborough's transport history in a more hands-on form.