1) The lotus flower is considered a sacred symbol in many cultures and is associated with purity, enlightenment, and rebirth.

2) The Pacific Ocean is the largest ocean on Earth, covering more than 30% of the planet's surface.

3) The discovery of the Americas by Christopher Columbus in 1492 opened up new trade routes and had a profound impact on world history.

4) The Great Wall of China is a UNESCO World Heritage site and one of the most iconic man-made structures in the world. It stretches over 21,196 kilometers (13,171 miles) and was constructed to protect the Chinese empire from invasions during ancient times.