CultureFocus: The Pyramids of Giza: Provides an introduction to the most famous monuments of ancient Egypt. Includes pictures.
Encarta Encyclopedia: Pyramids: Article explains what a pyramid is and how the form developed. Also provides a brief description of the Great Pyramid.
Encyclopedia Smithsonian: The Egyptian Pyramid: Short article tells how the pyramid evolved and explores how they were built.
National Geographic: Secrets of Ancient Egypt: Explore the pyramids of ancient Egypt through diagrams, photos, and facts.
Nova Online: Explore the Pyramids: Interactive site tells who build the pyramids and how old they are. Also includes an overview of Ancient Egypt as well as an introduction to hieroglyphs. From PBS.
Pyramids: Contains a detailed story of how the pyramids were built.
Pyramids: The Inside Story: NOVA Online tours the Great Pyramid in QuickTime VR, explains how the pyramids were constructed and by whom. Also covers a 1997 excavation of the bakery that fed the pyramid builders.
Secrets of Lost Empires: Pharaoh's Obelisk: Explores the science behind these ancient structures. Virtual slideshow offers a glimpse at the tools and techniques which were used, while a Shockwave game allows visitors to test their skill in lifting a virtual obelisk.
The Construction of the Pyramids: Explores how these fascinating structures were built.
The Great Pyramid of Giza: Provides the location, history, and a brief description of one of the seven wonders of the ancient world.
Wikipedia: Egyptian Pyramids: Encyclopedia article talks about pyramid construction, symbolism, and sites.