Larnaca Castle is located on the Southern point of the coastal avenue known as "Foinikoudes" (palm trees). Abbot Giovanni Mariti, who lived in Larnaca during the first half of the 18th century, recalls that the Castle was built by the Turks, but at the time it was already in a semi-ruinous state, even if it housed a garrison.

According to older sources, the castle dates back to an earlier period, during the years of the reign of King James I (1382-1398). These sources mention that the castle was built to protect the port of the city which, after the conquest of Famagusta, was used as the main port of the island. Other references from travellers confirm that the castle was built before 1625. Nothing is known about the design of the 14th century castle. In its current state of conservation, the castle consists of a complex of buildings built during different chronological periods. The two-storey building on the North side was built during the Ottoman period, as indicated by its architectural style and by a Turkish inscription above the entrance, while the East and South wings belong to earlier stages.

Today the castle houses a small museum consisting of three rooms located on the upper floor of the main building, directly above the entrance. The antiquities of the early Christian, Byzantine and post-Byzantine monuments of Cyprus (4th-16th century AD) are exhibited in the Western room. The photographs of the Byzantine murals dating from the 11th-16th centuries are exhibited in the central room. In the large Eastern room there are examples of medieval glazed ceramic (graffiti objects) (12th-18th centuries), metal kitchen utensils and pistols (18th-19th centuries), as well as helmets and swords (15th-16th centuries). The exhibition of objects is enriched with photographs of defensive structures (XI-XVII century) and styles of Gothic and Renaissance architecture of Cyprus (XIII-XVI century).

In the inner courtyard of the castle there is a collection of cannons, some of which date back to the medieval period.