1) The Age of Exploration, during the 15th and 16th centuries, saw European explorers such as Christopher Columbus and Vasco da Gama reach new lands and establish trade routes.

2) The Edelweiss flower, found in the European Alps, is known for its beauty and is often associated with mountaineering and alpine culture.

3) The word "telephone" contains five vowels: E, E, O, E, and E.

4) The blue whale is the largest animal to have ever existed, with an average length of about 82 feet (25 meters).