PBS
Pbs: Building Big: Domes
A collection of resources about domes that includes basic facts about domes, challenges faced by dome builders, famous domes from around the world, and a lab that helps you understand different kinds of materials used to construct domes....
Other
Sacred Places: St. Peter's Basilica
A description of the creation of St. Peter's Basilica. Information includes how it was erected and why the site was chosen.