The Mnajdra group stands isolated about 600 metres west of Hagar Qim. A narrow foot-path, at the rear of the latter temple, leads directly to the Mnajdra site.

Mnajdra is made up of two sizeable temples and a small trefoil unit similar to the tiny priests' quarters of Hagar Qim.

The middle temple (estimated age C. 3400 BC) is a regular four-apse structure. The standing blocks or orthostats which frame the circular building are neatly cut and placed together as at Tarxien central temple. The stone courses over the orthostats are also skillfully laid and their concave form is indicative of a domed roof which is now missing.

In the left-hand corner of the inner apse, a port-hole slab forms the entrance to a tiny sanctuary with a pedestal altar.

The adjacent third temple, which is earlier than the middle one just described, stands at a lower level. It is the finest surviving temple in Malta. The concave facade follows the usual pattern, with the trilithon entrance and the stone-bench. The masonry is of excellent workmanship.

In the first apse, a port-hole aperture leads into a small chamber which was probably the Holy of Holies of this site. This window-like slab is framed by a trilithon structure i.e. two uprights and a lintel, which is elaborately decorated with a dense mesh of pittings or tiny drillings. The inner room is of rectangular shape with small niches on all sides. Spiral carvings and drilled pittings decorate the slabs and give an exceptional aspect to this remarkable site.

The ruins of Mnajdra yielded valuable relics - stone and clay statuettes, shell and stone ornaments, flint tools and decorated earthenware. The lack of any metal object is evidence enough of the neolithic origin of this and of the other similar temples.