The Great Pyramid of Giza is one of the most incredible ... This hidden passage, located behind the pyramid's original entrance, is about 9 meters (30 feet) long and 2 meters (6.5 feet) wide.

At 146.5 m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.

As one of the original Seven Wonders of the World ... You'll find three primary pyramids, the best known being the Great Pyramid – affiliated with Khufu, the Fourth Dynasty pharaoh buried ...