Take the A4009 south from M40 J6, enter Watlington and turn left at the first T-junction, on to the B480. Climb up to Watlington Hill and Christmas Common is on your right, half a mile further on. Greenhill Farm Tree Barn (01491 612434) sells cut or rooted trees, up to 25 feet high. Book for Christmas lunch at the Fox and Hounds (01491 612599). There is also a snack menu from around £5. Children are welcome. Cowleaze Wood (01420 520212) was closed because of foot and mouth but is now open. Admission free. Chinnor and Princes Risborough Railway (01844 353535; www.cprra.co.uk). There is free parking outside Chinnor station. Red kites (www.gigrin.co.uk/ redkite.html).