Largest tree ever cut
The largest tree ever cut by humans was the General Noble Tree, a giant sequoia ( Sequoiadendron giganteum) from the Converse Basin Grove in the Sierra Mountains of California, USA. Contemporary reports suggest it stood 285 ft (86.9 m) tall and had a diameter of 19 ft 6 in (5.3 m) at a height of 52 ft (15.8 m) off the ground at which the cut was made (with the aid of specially built scaffolding tower), though at the base this increased to a diameter of 26 ft (7.9 m) and a circumference of 81.5 ...
Source: guinnessworldrecords.com