Are the oldest and best preserved of the Seven Wonders of the World.

Ancient Egyptian kings had them built as their tombs, although ancient Greeks and Romans

Believed the structures to be purely ornamental.

The largest pyramid, called the Great Pyramid, now stands 137 m (450 ft) tall.

The Great Pyramid and two other pyramids, built from about 2600 to 2500 BC,

Are the best remaining examples of this Egyptian architectural feat.