temple of the dioscuri, castor and pollux in the valley of temples, agrigento, sicily, italy

valle greece sunny pillar dei templi antique sicilia historic heritage ancient stone colonnade culture ruin archeology column valley pollux castor divinity sicily italy agrigento monument greek architecture unesco temple mediterranean history temples doric dioscuri europe sicilian columns tourism landscape landmark travel chtonie ruins antiquity outdoors archaeological park sanctuary sacred persephone demeter building