The creature revered as the guardian of sacred places in both Egyptian and Greek mythologies is the Sphinx. In Egyptian culture, the Sphinx symbolizes strength and wisdom, often guarding tombs, while in Greek mythology, the Sphinx poses riddles to travelers, punishing those who fail to answer correctly. Both depictions highlight the Sphinx's dual role as both protector and challenger, underscoring the complexity of mythological symbols in representing profound truths about life and existence.