Mriehel office block. Birkirkara is a city in central Malta. It is the most populated town on the island.The city consists of four autonomous parishes: St Helen, St Joseph, Our Lady of Mount Carmel and St Mary. It also houses one of the most famous colleges in Malta, St Aloysius' College. Birkirkara is the home town of Ex-President Edward Fenech Adami and former Opposition Leader Alfred Sant and also the birthplace of the first president of Malta Anthony Mamo.