Fabulous photo of part of the famous Unswept Floor mosaic, which once amusingly decorated a Roman dining-room floor.
This, however, is just a Roman copy of the Greek original by Sosus, now lost, that once adorned a royal(?) house at Pergamon.
This is another section that gives you an idea of its scale.
This Roman copy, itself wonderful, is from a Roman villa on the Aventine Hill in Rome and is now in the Museo Gregoriano Profano in the Vatican.

Introductory website with sections (click the boxes at the top the page) on Ascelpius, the history of medicine, doctors, surgery, medicines/drugs and diseases.

The webpage includes a list of plants that the Romans used for medicinal purposes.

An excellent site from the University of Virginia with specially written pages on various aspects of Classical medicine.

From Pompeii, now in the National Aarchaeological Museum, Naples.

A series of quotes from classical authors revealing the ancient distrust of doctors.

Modern doctors still adhere to these principles set down by the Greek doctor Hippocrates.

Greek and Roman astrology.

Timeline of important dates in ancient astrology.

Roman copy of a Hellenistic Greek statue showing Atlas holding up the globe of the heavens which has the signs on the zodiac sculpted on it.

Probably from the library in Trajan's Forum in Rome; now in the Archaeological Museum, Naples.

This cosmological mosaic discovered in the region of Zaghouan shows the gods of the seven days of the week and the signs of the zodiac. 3rd century AD; in the Bardo Museum, Tunisia.

Detailed timeline of inventions, people and events from 500 BC - 1BC.

A Greek site showcasing reconstructions of Ancient Greek technology.

Pictures and brief descriptions of some replicas of Greek inventions.

Good on-line resource still being developed and what there is so far is useful and informative about various areas of Greek and Roman technology.

Detailed website about Archimedes, one of the greatest Greek mathematicians and an inventor, physicist and astronomer. Explains many of his theories visually. Eureka!

A detailed look at some of the early Greek philosophers and their scientific theories.

Overview of Roman technology, although concentrating on architecture and engineering.