St. Helen and St. Anthony Bastions are located on the seaward side, facing Valletta. They originally had echaugettes and gunpowder magazines, but the echaugettes on both bastions were dismantled in the 19th century, and the magazine on St. Anthony Bastion was demolished to make way for three QF 12-pounder gun emplacements. The magazine on St. Helen Bastion is still intact. The curtain wall linking these two bastions contains the main gate, which is protected by a lunette known as the Couvre Porte.