On the eastern section of the island cluster of the Greek Cyclades is the ancient Naxos. This islands history spans as far back as 3000 B.C. and is known as the center of the ancient Cycladic civilization. Naxos, a town of the same name, is noted for its classic, Greek whitewashed limestone and marble structures due to the islands natural abundance of such materials. This marble doorway was erected in the 6th century as the entrance to a temple for Apollo which was never fully completed. Though primarily a harbor town, it is filled with ancient ruins, byzantine sanctuaries and even nightly events. Visitors can also explore the vast beaches and rolling mountain range that dominate the island.