1) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.

2) The world's oldest known living tree is a bristlecone pine named "Methuselah" in California, estimated to be over 4,800 years old.

3) The paella is a traditional Spanish rice dish that originated in the Valencia region. It is typically cooked in a wide, shallow pan and combines rice with various ingredients, such as saffron, vegetables, meat (like chicken or rabbit), seafood, and spices. Paella is known for its vibrant colors, aromatic flavors, and communal dining experience, often enjoyed during festive occasions and social gatherings.

4) The first modern Olympic marathon race was held at the 1896 Olympics in Athens and has since become one of the most iconic and challenging events in athletics.