American-Israeli Cooperative Enterprise
Jewish Virtual Library: Beit Govrin: A Roman Amphitheater
The Jewish Virtual Library offers an article on Beit Govrin, an area where remains of a Roman Amphitheater were discovered in the mid-1990s.
Able Media
Classics Technology Center: The Roman Gladiator
Nice overview of the history of gladiatorial games and their function in Roman society. Mentions how people became gladiators, how they trained, and the possibility of female gladiators.
City University of New York
Brooklyn College: Roman Amphitheaters
A short history of the Roman amphitheater, the most famous being the Colosseum located in Rome itself. These structures were used for public games such as gladiator contests.
Other
United Nations of Roma Victrix: Roman Gladiator
An account that describes who the gladiators were, how they fought and why, how were they trained, and more. It also provides some interesting facts about them such as that there were women gladiators.