1) The ancient city of Rome was founded in 753 BC and went on to become one of the most powerful and influential civilizations in history.

2) The Great Barrier Reef in Australia is the largest coral reef system in the world and is visible from space.

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

4) The Beatles hold the record for the most number-one hits on the Billboard Hot 100 chart, with 20 songs reaching the top spot.