Wadenhoe is bounded on the south east by the River Nene, where the land is mainly watermeadows. To the north-west the land rises towards the remains of Rockingham Forest. The church sits high above the river and is separated from the village by a fortified site known as Castle Close which pre-dates the Saxon period. Below the church is the Wadenhoe Marsh, SSSI. The estate contains other ancient monuments, including an early windmill site, a medieval rabbit warren, a 12th or 13th century deer park, ridge and furrow field remains and limestone quarries.