Fort Rinella in Kalkara has been crowned the best cultural attraction in the Maltese Islands in 2018.
The living museum was praised by TripAdvisor reviewers as 'an excellent day out' and 'unique'.
The coastal battery was built in 1878 by the British Army.
It housed the world's biggest gun to defend Malta against enemy attacks and protect Britain's interests in the Mediterranean Sea.
The fort is now run by volunteers who bring history back to life for the thousands of visitors who tour the historic site every year.
Amazing facts about Malta's 100-ton gun
The fort famously houses one of only two remaining Armstrong 100-ton guns.
It was developed by Victorian inventor Sir William George Armstrong
The gun could be fired every 6 minutes
A one-ton shell travelled up to 8 miles
The shell could pierce through 65cm of ship armour
It was the world's largest muzzle loaded cannon
Each explosive shot used a quarter ton of black powder, costing on average the daily pay of 2,700 soldiers
It was so expensive to use, it was only fired for practice every three monthsFort Rinella in Kalkara has been crowned the best cultural attraction in the Maltese Islands in 2018.