With a dramatic home inside the Austro-Hungarian fortress Verudela, Pula’s Aquarium is the largest in Croatia.

The aquarium is a useful option for rainy days or the hottest afternoons in summer.

Blending neatly with the fort’s stone architecture are tanks with freshwater and marine species native to Croatia and the Adriatic, together with tropical displays, a turtle rescue centre (the only one to be found in Croatia) and an entire room devoted to sea horses.