Walk through history inside the underground fortress constructed during World War II under the direction of Winston Churchill and British military leaders.

Your guide leads you through the subterranean complex that once housed hospitals, power stations, and living quarters for 100 people. Take in the views from Jock's Balcony and view historic 1940s photography. (Hard hats provided; please wear flat, non-slip shoes for the steep exit incline).

(Note: Guests dropped off for shopping are responsible for making their own way back to the ship.)

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