The tree that has a brainlike look to its large seed pod is the Monkey Puzzle Tree (Araucaria araucana).

Its seed pods, which are actually cones, are large and irregularly shaped, resembling a brain with deep furrows and ridges.

This unique appearance is one of the reasons why the tree is called the "Monkey Puzzle Tree." The name is said to have come from an English visitor who observed that it would be a puzzle for a monkey to climb up its prickly branches.