Perched on the crest of the hill to the south of Xagħra, the awe-inspiring megalithic Ġgantija Temples command soaring views over most of southern Gozo. As the name implies (ġgantija – dje-gant-ee-ya – means 'giantess'), these are the largest of the megalithic temples found on the Maltese Islands – the walls stand over 6m high, and the two temples together span over 40m.

　　The site has a wonderful visitor's centre, with displays putting the temples into context and showcasing many of the extraordinary carvings discovered here, including the famous 'fat ladies'.

　　Along with Ta'Ħaġrat and Skorba in Malta, the Ġgantija Temples are thought to be Malta's oldest, dating from 3600 to 3000 BC. Both temples face towards the southeast, and both have five semicircular niches within. The south temple (on the left) is the older, and is entered across a huge threshold slab with four holes at each side, thought to be for libations. The first niche on the right contains an altar with some spiral decoration – there was once a pillar here with a snake carved on it, but the pillar now lives in Victoria's Archaeology Museum. The left-hand niche in the inner chamber has a well-preserved trilithon altar; on the right is a circular hearth stone and a bench altar.

　　The outer wall of the later north temple complex is particularly impressive in scale. The largest of the megaliths measures 6m by 4m and weighs around 57 tonnes, and the wall may originally have stood up to 16m tall – it's incredible to contemplate how these huge stones were put in place. The exterior walls were built of harder-wearing coralline limestone, while the interiors were built of the lighter globigerina limestone – brought here from around a kilometre away.