Castle 42   See: Highclere Castle £9.50 castle & gardens/£8.50 over 60 (11-6:00 Sun-Thurs, last entry 4:00) Castle and Egyptian Exhibition The 1,000 acre estate country house in high Elizabethan style, with park designed by Capability Brown .    5:00 p.m. Depart: Highclere   5:30 p.m. Arrive: Avebury 28   Do: Avebury