Along with the theater, the Great Temple is one of the most important buildings and impressive archaeological sites of Segesta. The temple is very near the park and visitor reception. This great Greek temple is 400 meters high, on the summit of Mount Barbaro, dominating the entire valley. It was built in the 5th century BC and is the best preserved temple in the entire island of Sicily. The peristyle consists of 36 plain columns (14 on the long side and 6 on the front). The building was actually unfinished, though, and this is probably due the time when the Carthaginans captured the city. It is very interesting.