This was a big reason for going to the IOW, to see Queen Victoria's former royal home which was presented to the nation by her son Edward VII in 1902. I would recommend buying the guide book for £5 as it gives a lot of additional detail for each room as you go around as well as providing plenty of extra reading for after your visit. The guide book is made even more important due to the lack of information displayed in each room. The tour takes in: The grand corridor; council room; audience room; table checkers room; dining room; drawing room; billiard room; nursery bedroom / sitting rooms; staircase; page's alcove; prince albert's bathroom; prince albert's dressing and writing room; queen Victoria's sitting room; queen Victoria's dressing room; queen Victoria's bedroom; horn room; Durbar corridor; Durbar room. In addition to the main house you can also walk the grounds to see the Swiss Cottage which is where the Royal children learnt gardening skills and created their own museum - really fascinating and worth the detour. You can also walk down to the beach to see Victoria's bathing cart (we didn't as it was getting a bit too cold!).
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