The lines were built in the 18th century by the Order of Saint John, and today lie in ruins.

The Falca Lines are part of a series of fortifications built by the Order of Saint John in the early 18th century.

In the 1880s, the British began to fortify the area once more with the construction of the Victoria Lines (then known as the North West Front).

The inclusion of the Falca Lines into the new fortifications was considered, but was eventually discarded since the position was unfavourable.

Part of the lines are severed by Triq Sir Temi Zammit, the road leading to Mġarr.