The document provides background information on two famous temples from classical architecture: the Parthenon and the Pantheon. It discusses their materials, uses, locations, and some key differences. The Parthenon was constructed primarily from marble in Athens, Greece in the 5th century BC and dedicated to the goddess Athena. The Pantheon in Rome was constructed mostly from granite and converted to a church in the 7th century, making it one of the best preserved Roman buildings. While both used pillars, the Parthenon was made of marble while the Pantheon used granite and had a dome structure allowing light through an oculus.