The Ancient Bristlecone Pine Forest is located in California on the Inyo National Forest. The White Montains are one of the homes for these ancient "ones" including the oldest living thing on Earth, "Methuselah". It was measured by core samples in 1957 to be 4,789 years old! It's still alive but to protect it the exact location is kept a secret. Here's a sampling of Earth's oldest living organisms.