Ġgantija Temples
Location: Malta. Built: Between 3,600 and 3,200 B.C. Inhabitants of the island of Gozo once believed these two temples were built by a race of giants, hence their name, which is derived from the Maltese word for giant. The temples are constructed of coralline limestone, and some of the stones weigh over 50 tons. Inside, softer globigerina limestone was used for decorative elements. The temples, as well as five other temples in Malta, were named UNESCO World Heritage sites in 1980.