One Piece Wiki
No References.png The following article has no references to the official sources.
Please add references according to our Guidelines. You can help the Wiki by adding them to the page.

The Tree of Knowledge was a gigantic 5,000-year-old tree located on the island of Ohara which served as a library and a hub for archaeologists from around the world.[2] It was destroyed by the World Government via a Buster Call.


The tree was used by archaeologists who were able to decipher the Poneglyphs. As research of the Poneglyphs is forbidden by the World Government, they sent CP9 to attack the archaeologists and called forth a Buster Call. When Spandine, the chief of CP9 back then, activated the Buster Call to destroy Ohara, the tree fell and crushed almost everything. It is here where Nico Robin learned to read this language, that still remained unbeknownst to the other archaeologists. Its library was the oldest known structure in the world.

Aside from the archaeologists research of the poneglyph located there, the Tree of Knowledge contained thousands of historic resources that were gathered from all across the globe over hundreds of years. After the Tree of Knowledge caught fire during the Buster Call, the archaeologists desperately threw books into a nearby lake and their efforts saved enough books to fill up the entire lake.


  • The Tree of Knowledge's name is a possible reference to the tree of the knowledge of good and evil from the Bible, which is the tree that Adam and Eve ate from.
  • The Tree of Knowledge may have been inspired by Methuselah, which is around 5000 years old, making it one of oldest known living individual trees. Old Hara, discovered in 2013, is even older.
  • The Tree of Knowledge's fate was similar to the Library of Alexandria, one of the largest and most significant libraries of the ancient world, as it was also burned down.


  1. One Piece Manga and Anime — Vol. 41 Chapter 391 (p. 13) and Episode 275, The Tree of Knowledge is first seen.
  2. One Piece Manga and Anime — Vol. 41 Chapter 392 (p. 3) and Episode 275, Clover talks about the Tree of Knowledge.

Site Navigation