Ħaġar Qim, a UNESCO World Heritage Site, is a testament to Malta's prehistoric inhabitants' architectural prowess. Dating back to the Ġgantija phase between 3600–3200 BC, this megalithic temple complex stands as one of the most ancient religious sites on Earth. The use of globigerina limestone in its construction has led to significant weathering, prompting the installation of a protective tent in 2009 to preserve its intricate designs and monumental structures.