Fort St Elmo and the National War Museum in Valletta will open for free on Sunday.
The open day is to mark the 76th anniversary of the awarding of Malta’s George Cross by King George VI.
Heritage Malta will hold three guided tours of the historic fort at 9.30am, 1.30pm and 3.30pm.
The National War Museum is also part of Fort St Elmo and focuses on Malta’s role during the Second World War.
Some of the most sought-after items on display are the Gloster Sea Gladiator ‘Faith’ and President Roosevelt’s jeep.
Fort St Elmo was built in 1552.
It played an important role during the Great Siege of 1565 and during the Second World War.
After the Royal Malta Artillery left the fort in 1972, the upper part was used as a police academy.
It was restored and opened to the public in 2015.
Read more: Heritage Malta