How old is the oldest tree? Wikimedia gives a quick guide. Maybe 6,000 years if carbon dating of baobabs is correct. Imagine touching a living tree that someone else slept under 6,000 years ago.

By Zigomar (Own work) [GFDL or CC-BY-SA-3.0-2.5-2.0-1.0 (www.creativecommons.org/licenses/by-sa/3.0)] via Wikimedia Commons