Explanation

The Great Pyramid, the largest of the three main pyramids at Giza

It was built by Khufu.

It rises to a height of 146 meters (481 feet).

It is the oldest of the seven wonders of the world

It was also known as the Pyramid of Khufu. 

Additional information:

The seven wonders of the world are:

1. Great Wall of China 
2. Petra Maan, Jodan.
3. Colosseum Rome Italy
4. Chichen Itza Yucatan, Mexico
5. Machu Picchu Cuzco Region, Peru.
6. Taj Mahal Agra, Uttar Pradesh India
7. Christ the Redeemer Rio de Janeiro, Brazil.