1) 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.

2) The tongue of a blue whale is so big that about 50 people could stand on it.

3) Cyclones play a vital role in Earth's climate system by redistributing heat and moisture, maintaining global temperature patterns, and influencing weather patterns.

4) The human brain has a storage capacity equivalent to around 2.5 petabytes, which is roughly equivalent to three million hours of TV shows.