South America has to be the region with the weirdest kind of trees. I mean just take a look at this crazy colored eucalyptus tree or this infected grape tree, both found in Brazil. Now they have discovered the Cannonball Tree with a lot of fruit that look like a cannonball, hence the name. They can remind of coconuts because they fall unpredictable from the tree and crack open.
This tree can have up to 300 fruits that can be 24 cm in diameter so I don’t think you want to get one of those on your head. It can be so dangerous that the trees have signs saying: “Watch out for falling cannonballs.” They do not only grow in South America; recently they have been found in India, and they are also planted in botanical gardens around the world.