Port Hercule Contre-Jetée de l’Avant Port Light, Maritime lighthouse in La Condamine, Monaco

The Port Hercule Contre-Jetée de l'Avant Port Light is a small green-flashing beacon on the counter-mole of the outer harbour entrance at La Condamine, Monaco. It marks the approach for vessels entering the deep-water basin of Port Hercule.

The contre-jetée light was installed in 2006 during a modernization of Port Hercule's navigation aids. The harbor itself has served as a natural anchorage since antiquity, when Greek and Roman traders used these waters. The current breakwater and beacon belong to later expansions of the port.

The light contributes to Monaco's long connection with the sea and the working harbor that sustains the port's daily activities. Passing boats and fishing vessels make use of this aid while anchoring in one of the Mediterranean's busier harbors.

The best views of this light are from the public paths around the harbor, especially in the evening when its green flashes are most visible. The harbor is easily accessible on foot from the town center and has several viewing spots along the waterfront.

The beacon sits alongside a patented water wall technology in the harbor's breakwater system, an engineering solution rarely seen elsewhere on the Mediterranean coast. This design allows the harbor to work with natural water movement while protecting moored vessels more effectively.