1) The development of the World Wide Web Consortium (W3C) and web standards has ensured interoperability and compatibility across different web browsers and devices.

2) The Sydney Opera House, situated in Sydney, Australia, is an iconic architectural masterpiece and a UNESCO World Heritage site. Its unique design, resembling sailboats or shells, has made it one of the most recognized and photographed landmarks in the world.

3) The world's largest ocean, the Pacific Ocean, covers an area of approximately 63 million square miles.

4) The world's oldest known recipe is for beer and is over 4,000 years old.