World's Seven Man Made wonders.

Seven Man Made wonders of the world.

The Great Pyramid of Giza
The Hanging Gardens of Babylon
The Temple of Artemis at Ephesus
The Statue of Zeus at Olympia
The Mausoleum at Halicarnassus
The Colossus of Rhodes
The Pharos of Alexandria

The Great Pyramid of Giza

When it was built, the Great pyramid was 145.75 m (481 ft) high. Over the years, it lost 10 m (30 ft) off its top. It ranked as the tallest structure on Earth for more than 43 centuries, only to be surpassed in height in the nineteenth century AD. It was covered with a casing of stones to smooth its surface (some of the casing can still be seen near the top of Khefre's pyramid). The sloping angle of its sides is 54 degrees 54 minutes. Each side is carefully oriented with one of the cardinal points of the compass, that is, north, south, east, and west. The horizontal cross section of the pyramid is square at any level, with each side measuring 229 m (751 ft) in length. The maximum error between side lengths is astonishingly less than 0.1%.

The Hanging Gardens of Babylon

The Babylonian kingdom flourished under the rule of the famous King, Hammurabi (1792-1750 BC). It was not until the reign of Naboplashar (625-605 BC) of the Neo-Babylonian dynasty that the Mesopotamian civilization reached its ultimate glory. His son, Nebuchadnezzar II (604-562 BC) is credited for building the legendary Hanging Gardens. It is said that the Gardens were built by Nebuchadnezzar to please his wife or concubine who had been "brought up in Media and had a passion for mountain surroundings".

The Temple of Artemis at Ephesus

The foundation of the temple was rectangular in form, similar to most temples at the time. Unlike other sanctuaries, however, the building was made of marble, with a decorated façade overlooking a spacious courtyard. Marble steps surrounding the building platform led to the high terrace which was approximately 80 m (260 ft) by 130 m (430 ft) in plan. The columns were 20 m (60 ft) high with Ionic capitals and carved circular sides. There were 127 columns in total, aligned orthogonally over the whole platform area, except for the central cella or house of the goddess.

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.

The Mausoleum at Halicarnassus

The structure was rectangular in plan, with base dimensions of about 40 m (120 ft) by 30 m (100 ft). Overlying the foundation was a stepped podium which sides were decorated with statues. The burial chamber and the sarcophagus of white alabaster decorated with gold were located on the podium and surrounded by Ionic columns. The colonnade supported a pyramid roof which was in turn decorated with statues. A statue of a chariot pulled by four horses adorned the top of the tomb.

The Colossus of Rhodes

Let us first clear a misconception about the appearance of the Colossus. It has long been believed that the Colossus stood in front of the Mandraki harbor, one of many in the city of Rhodes, straddling its entrance. Given the height of the statue and the width of the harbor mouth, this picture is rather impossible than improbable. Moreover, the fallen Colossus would have blocked the harbor entrance. Recent studies suggest that it was erected either on the eastern promontory of the Mandraki harbor, or even further inland. Anyway, it did never straddle the harbor entrance.

The Pharos of Alexandria

Of the six vanished Wonders, the Lighthouse of Alexandria was the last to disappear. Therefore we have adequately accurate knowledge of its location and appearance. Ancient accounts such as those by Strabo and Pliny the Elder give us a brief description of the "tower" and the magnificent white marble cover. They tell us how the mysterious mirror could reflect the light tens of kilometers away. Legend says the mirror was also used to detect and burn enemy ships before they could reach the shore