The world's oldest tree is a Great Basin bristlecone pine, growing in the Inyo National Forest in California. It is 4854 years old.
This tree germinated while the Old Kingdom of Ancient Egypt was flourishing, and predates most of written human history. It's older than the Olmec civilisation, older than the first Chinese writing, older than Stonehenge. By the time Sappho was writing her poems, it was already ancient.
Sometime I need to go to California to do an ancient trees tour. Between the Ancient Bristlecone Forest and the Redwood National and State Parks, there are so many things there I need to see.