Piggyback

https://commons.wikimedia.org/wiki/File:Bialbero_di_Casorzo.jpg
Image: Wikimedia Commons

Between Grana and Casorzo, Italy, grows a cherry tree atop a mulberry tree.

It’s not uncommon for a small tree to grow on a larger one, but it’s rare for them to reach such a large size. The cherry even flowers in the spring.

The pair are known as the Bialbero de Casorzo, or “double tree of Casorzo.”