1) The Great Barrier Reef in Australia is the largest living structure on Earth and can be seen from space.

2) The Battle of Waterloo in 1815 marked the final defeat of Napoleon Bonaparte and the end of his reign as Emperor of France.

3) The shortest scheduled commercial flight lasts just 1.7 miles and connects two Scottish islands, Westray and Papa Westray.

4) The word "country" contains three vowels: O, U, and Y.