Grenades were invented in China over 1,000 years ago.
50
The Taj Mahal took 20 years and 20 thousand men to finish!
83
In ancient Greece, tossing an apple to a girl was a traditional proposal of marriage. Catching it meant that she accepted.
29
A monk had once written over a book that contained information about calculus that was written by Archimedes in ancient Greece that could have made us 100 or even 1000 years more mathematically and technologically advanced.
13
Recently, archaeologists excavating in the old medieval town of Odense in Denmark uncovered 700-year-old barrels of poop - and, to their surprise, they still smelt.
11
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
During World War 1, Harry Houdini took 1 year off performing to help sell war bonds and teach american soldiers how to escape from German handcuffs.
34
Nazi leader Adolf Hitler had only one testicle.
117