Potteric Carr Nature Reserve - "Potteric Carr is a wild oasis just waiting to be explored. Now nestling between motorway and railway, it's a remnant of the vast fenland that once stretched all the way across the Humber basin to the coast. Around each corner you'll discover a true mosaic of habitats, from reedbeds swaying gently under big open skies to winding woodland trails and networks of ponds teeming with life." "Access to the café, shop and nature reserve is suitable for wheelchairs and pushchairs." - from the Yorkshire Wildlife Trust website

See also the Accessible Nature website