Ħaġar Qim and Mnajdra are Neolithic megalith temple complexes, located on the island of Malta. Built over 5,000 years ago in the fourth millennium BCE, these temple complexes are among the oldest freestanding structures in the world and the most ancient religious sites on earth. Together they form the Ħaġar Qim & Mnajdra Archaeological Park, and are among several similar structures designated a UNESCO World Heritage Site in 1992, called the "Megalithic Temples of Malta." Ħaġar Qim consists of a central building and the remains of at least two other structures built from approximately 3600-3200 BC, while Mnajdra consists of at least three temple structures built from approximately 3600-2500 BC.
Although each temple is different, their architectural design is similar to most other Neolithic temples on the island. This design typically consists of a large, elliptical forecourt in front of a monumental concave facade, fronting a series of C-shaped rooms or apses. These apses are arranged on each side of a central paved space. Walls and slabs with square portholes cut through as doorways were used to screen off the apses, and some appear to have been aligned astronomically to match the Winter and/or Summer solstices. The surviving horizontal masonry courses indicate the monuments had corbelled roofs, which was a sophisticated solution for its time. Decorative features of the temples include panels with drilled hole decorations and bas-relief panels depicting spiral motifs, trees, plants and various animals.