Illustration by Matt Lubchansky.

Sources:

Hirsohima Tree
Major Oak
The Tree on the Lake
Old Tjikko
The Hardy Tree
Fairy Post Office
Chandlelier Drive-Thru Tree
Chapel Oak
Tree of Life
Hitachi Tree
General Sherman
Hyperion Tree
Tree of Tenere
Hangman’s Elm
Great Banyan Tree
Pennantia baylisiana 
Boab Prison Tree
Jaya Sri Maha Bodhi
Tree Goats
Arbol del Tule Tree