1) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

2) The word "umbrella" contains three vowels: U, E, and A.

3) The world's largest particle accelerator, the Large Hadron Collider, is located near Geneva, Switzerland, and spans a circumference of 17 miles (27 kilometers).

4) The musical "Les Misérables" is one of the longest-running shows in the West End and Broadway, with over 13,000 performances.