The Tallest Human Being in History

1. The Tallest Human Being in History

Robert Pershing Wadlow · Alton, Illinois, USA · 1940

Wadlow's height2.72 ma standard living room ceiling2.7 m≈ 1× a standard living room ceiling
Robert was so astonishingly tall that his head would have brushed a standard living room ceiling!

Born to average-sized parents in 1918, Robert was a mild-mannered boy whose body just wouldn't stop growing. By the time he was only eight years old, he was already taller than his own father—and could even carry his dad up the stairs!

Despite his massive size, Robert just wanted to be a regular kid. At age thirteen, he became the world's tallest Boy Scout. He needed a custom-made uniform, sleeping bag, and a giant tent just so he could go camping with his friends.

Tragically, Robert passed away at just 22 years old from a poorly fitted leg brace. Remembered globally as the "Gentle Giant," he handled his immense fame—and a world built for much smaller people—with absolute champion-level grace.

How Is That Even Possible?

Robert was born with a rare variation in his pituitary gland—the part of the brain that tells the body when to grow. While most kids' glands hit the brakes after puberty, Robert's kept hitting the gas, flooding his body with growth hormones his entire life.

Wow-o-Meter
No. 1
A joyful, bustling Boy Scout campsite scene where a towering, incredibly tall Boy Scout in a custom-fitted uniform stands proudly by a massive, oversized tent. He is cheerfully holding a gigantic toasted marshmallow on a long stick for his average-sized friends, who are gazing up at him in awe and cheering. A clipboard-holding judge stands nearby, giving a massive thumbs-up while celebratory ribbons burst from the trees.

The Tallest Human Being in History — Robert Pershing Wadlow