Temple ruins
Almost as soon as you enter the protected area you see columns from ancient temples. The Oracle at Delphi was the main attraction. The Oracle was the Miss Cleo of Ancient Greece. The Oracle predicted the future in strange, very vague riddles that could be interpreted in a number of ways. That way if the Oracle was wrong he could say the listener misinterpreted.
Since the Oracle was the big drawing card a virtual city full of religious temples, vaults and stores were built on the road leading up to the Oracle's location.