GUNS.

French cruiser Colbert in her pre-1970 anti-aircraft configuration. No room for any guns?
As built the cruiser had an absurd amount of antiaircraft guns; sixteen 127 mm guns in eight twin turrets and twenty 57 mm guns in ten twin turrets. As supersonic aircraft and missiles came into existence, her gun-based armaments were rendered obsolete and ineffective, and Colbert was converted into a missile cruiser. From 1993 to 2007 she was a museum ship at Bordeaux, France; following the closing of the museum due to financial difficulties, the ship is now awaiting disposal.

Is there any room for a gun!