Below are 10 interesting historical facts that might sound unreal but are actually true.

1. In 1987, an American Airlines were able to save $40,000 just by removing one olive from each salad that was served in first-class.

2. Revolving door was invented in 1888 by Theophilus Van Kannel simple because he hated opening doors for women.

3. In 2000, a Frenchman in Egypt decided to build an “End of the world” cinema in Sinai desert, Egypt. Well he succeeded, but till date, no movie has been screened and the cinema has been left to rot in the desert.

4. In 1990, a 6.5 acres Kowloon walled city in Hong Kong was the most densely populated place in the world.

It housed approximately 50,000 people. The city was demolished in 1994.

5. In 2015, Volkswagen sold more sausages than cars.

When someone asks you what does Volkswagen sell, tell them Sausages, lol.

6. The first person to put wheels on an office chair was Charles Darwin.

7. The largest gold object in the world is A 15th century statue of Buddha at the Wat Traimit temple, Bangkok, Thailand. The statue stands 3 metre tall and weighs 5.5 tonnes.

9. The Codex hammer book was bought for $30,800,000 by Bill Gates in 1994. The Codex is one of the Leonardo da Vinci notebook and has most of his scientific works.

10. Anna Pepper was born in December 1882, she was given 26 first names one of each letter of the alphabet in alphabetical order : Anna Bertha Cecilia Diana Emily Fanny Gertrude Hypatia Inez Jain Kate Louisa Maud Nora Ophelia Prudence Quince Rebecca Starkey Teresa Ulysis Venus Winifred Xenophone Yetty Zeus Pepper.