Throgs Neck or Whitestone Bridge to New York extension of New England Thruway to Route 287 to New York State Thruway (North).  Exit 9 (Tarrytown - last exit before bridge). At end of exit ramp, go left at light. Continue to the next traffic light and make a right onto Route 9 North to Sleepy Hollow approximately 2 miles.  Turn left onto Beekman Ave. Follow Beekman Ave to the end then follow signs and park in big parking lot.