Jōmon Sugi, located in Yakushima, Japan, is the oldest and largest cryptomeria tree on the island, and is one of many reasons why the island was named a UNESCO World Heritage Site. The tree dates to at least 2,000 years old, but some experts believe it could be older than 5,000 years old. Under that theory, it's possible that Jōmon Sugi is the oldest tree in the world — even older than Methuselah. Regardless of the numbers, it's a tree that deserves mention here.