Great Pyramid of Giza

It is located at the city of Giza, a necropolis of ancient Memphis, and today part of Greater Cairo, Egypt.

Contrary to the common belief, only the Great Pyramid of Khufu (Cheops), not all three Great Pyramids, is on top of the list of Wonders. The monument was built by the Egyptian pharaoh Khufu of the Fourth Dynasty around the year 2560 BC to serve as a tomb when he dies. The tradition of pyramid building started in Ancient Egypt as a sophistication of the idea of a mastaba or "platform" covering the royal tomb. Later, several stacked mastabas were used. Early pyramids, such as the Step Pyramid of King Zoser (Djoser) at Saqqara by the famous Egyptian architect, Imhotep, illustrate this connection.

The great pyramid is believed to have been built over a 20 year period. The site was first prepared, and blocks of stone were transported and placed. An outer casing (which disappeared over the years) was then used to smooth the surface. Although it is not known how the blocks were put in place, several theories have been proposed. One theory involves the construction of a straight or spiral ramp that was raised as the construction proceeded. This ramp, coated with mud and water, eased the displacement of the blocks which were pushed (or pulled) into place. A second theory suggests that the blocks were placed using long levers with a short angled foot.

The Statue of Zeus at Olympia

Pheidias began working on the statue around 440 BC. Years earlier, he had developed a technique to build enormous gold and ivory statues. This was done by erecting a wooden frame on which sheets of metal and ivory were placed to provide the outer covering. Pheidias' workshop in Olympia still exists, and is coincidentally or may be not identical in size and orientation to the temple of Zeus. There, he sculpted and carved the different pieces of the statue before they were assembled in the temple.

When the statue was completed, it barely fitted in the temple. “Although the temple itself is very large, the sculptor is criticized for not having appreciated the correct proportions. He has shown Zeus seated, but with the head almost touching the ceiling, so that we have the impression that if Zeus moved to stand up he would unroof the temple."

Strabo was right, except that the sculptor is to be commended, not criticized. It is this size impression that made the statue so wonderful. It is the idea that the king of gods is capable of unroofing the temple if he stood up that fascinated poets and historians alike. The base of the statue was about 6.5 m (20 ft) wide and 1.0 meter (3 ft) high. The height of the statue itself was 13 m (40 ft), equivalent to a modern 4-story building.