Windsor Castle and Windsor is well worth visit. If the timings work out it's definitely worth getting there for 10.45am to see the changing the guard on various days. Walk down from the castle towards the river Thames and cross the bridge and you will be in Eton.
To make the most of your time at Windsor Castle, pick up one of the free multimedia guides at the start of your visit or bring your own headphones. Available in various languages.

You can add extra stop time Car £40 per hour and Minivan £50 per hour payable to the driver on the day by credit card or cash. PLEASE BOOK THIS IN ADVANCE WITH US.

PLEASE BOOK YOUR WINDSOR CASTLE TICKETS IN ADVANCE ON THE OFFICIAL WINDSOR SITE AS THE CASTLE CAN BE CLOSED ON CERTAIN DATES FOR SPECIAL OCCASIONS AS ITS STILL A WORKING CASTLE.