What is the Oracle of Delphi?

The Oracle of Delphi was the most important oracle in the classical Greek world, and a major site for the worship of the god Apollo. Built around a sacred spring, Delphi was considered to be the omphalos – the centre of the world. Scholars congregated at Delphi, and it became a focal point for intellectual enquiry. Delphi lies on the slopes of Mount Parnassus in Greece.