1) The New York Stock Exchange (NYSE) is the largest stock exchange in the world.

2) The Himalayas, known as the "Roof of the World," are home to numerous majestic peaks, cultural diversity, and unique wildlife.

3) The Machu Picchu archaeological site, located in Peru, is an ancient Incan citadel situated high in the Andes Mountains. It is recognized as a UNESCO World Heritage site and attracts visitors from around the world who come to marvel at its remarkable architecture and scenic surroundings.

4) The word "school" contains two vowels: O and O.