1) The Giza Pyramid Complex, situated on the outskirts of Cairo, Egypt, is home to the iconic Great Pyramid of Giza, one of the Seven Wonders of the Ancient World. It was built as a tomb for the pharaohs and represents the pinnacle of ancient Egyptian architecture and engineering.

2) The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.

3) The sunflower is not a single flower but a cluster of small flowers arranged in a spiral pattern.

4) The first commercially successful video game was "Pong," released in 1972 by Atari.