This unfinished doric temple, perched on the mount Barbaro (built in 430 b-JC) and the theater are all that remains there from the antic Segesta, enemy city of its Greek neighbor Selinunte.
The town of Segesta was founded by Elymes people, descendants of Troyens which destroyed Selinunte in 409 b-JC.
About one century later, the Greek leader Agathocles was avenged by killing 10 000 Elymes and by repopulating the city with Greeks.