Heurt Fort

Heurt Fort is a military fortification in the open sea near Le Portel, featuring a semi-circular platform that rises 13 meters above its rocky base. The structure was designed to be accessible during low tide, allowing visitors to examine its stonework and the nearby mussel beds.

Napoleon Bonaparte ordered construction of this coastal defense structure in 1803 to protect the Boulogne Camp from British naval attacks. The fort was part of a broader defensive system built along France's northern coast.

The fort displays French military construction methods from the Napoleonic period, using cut stones from local quarries in the area.

The fort is only accessible at low tide and requires careful planning for a visit, as tidal patterns determine when you can reach it. Check tide tables beforehand and wear appropriate footwear, as the rocky surfaces can be slippery.

During World War II, German forces installed anti-aircraft batteries on the fort by pouring concrete over the original structure. This concrete layer, though added for military purposes, paradoxically helped protect and preserve the older stone construction beneath it.