The ancient culture known for its oracle at Delphi is the ancient Greeks. The Oracle of Delphi was a priestess known as the Pythia, who served as a medium through which the god Apollo communicated. Pilgrims from all over Greece and beyond would visit Delphi to seek guidance on various matters, such as war or personal dilemmas. The sacred site, located on Mount Parnassus, was considered the center of the world by the ancient Greeks and played a pivotal role in their religion, politics, and culture, influencing decisions for centuries.