The Water Tower is at the top of the Queen's Staircase. I just returned and it was closed for renovations. Not sure when it is reopening. It isn't very tall, but they say it is the tallest point on the island. I'm sure it is a great view from the top so if it is open when you go there, and want to see a panoramic view of the island, considering going to the top.
Next to the tower is Fort Fincastle. It is a good opportunity to see a few of the sites all at once.
See reviews about the staircase and fort.
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