Great pyramid of Giza is one of seven wonders of ancient world situated in Giza Necropolis of Egypt. It is also the oldest and largest one of all three pyramids built for pharaohs Khufu, Khafre and Mnkaure in Giza complex. The pyramid was built between 2589 B.C and 2504 B.C. More than 2.3 million stone blocks were used for itโs construction. It have a height of 481 feet and it remained as tallest manmade monument in the world for long 3800 years. The mortar used for the construction of Giza pyramid stronger than that of stones.Archaeologists believed that that kind of mortar canโt be reproduce nowadays. Pyramid of Giza contains three chambers, first one is located at underground it is carved into bed rock. The chambers of both queen and king situated above ground. The kingโs chamber was decorated with granite and itโs roof made of nine enormous slabs that weights more than 400 tons in total. There is also a 8 meter high and 47 meter long grand gallery that leads to kingโs chamber.