Over 2,000 years ago, a Greek writer called Antipater of Sindon, compiled a list of what he considered to be the most spectacular buildings of his days. These later became widely known as the Seven Wonders of the World. Nobody knows exactly why Antipater made his list. Perhaps it was intended as an early tourist guide to the countries of the eastern Mediterranean. The actual number of "wonders" is thought to be significant. Since the earliest times the number seven was considered sacred and was often associated in folklore and religion with special or mystical events. Inevitably, over the centuries, some of the Seven Wonders collapsed and fell into ruins, and later writers compiled their own list of other splendid thoughts or "wonders". But what distinguishes all the "wonders" from other buildings throughout history whether ancient or modern, is that there is something amazing about them - either their collossal size, the remarkable way in which they were build, or simply their outstanding beauty. And the one factor they all have in common is their unfailing ability to make people marvel at their very existence.