(1) a clock/bell tower
(2) the tower of London
(3) the Eiffel tower

(1) Beware the sharks when you are making up your mind how to invest.
(2) Other Ingredients : Gelatin, Glycerin. This product contains fish ( shark ) ingredients.
(3) The shark is a large fish.

(1) whale meat
(2) I had a whale of a time in Birmingham.
(3) I first became acquainted with him on board a whale vessel.