University of California
Ucla: Manas: Taj Mahal
This site has several photos as well as a history of the Taj Mahal.
Islami City
Islami City: Taj Mahal, Agra, India
Here is a picture of the Taj Mahal as well as information regarding the construction of the building.
Other
Geodesic Domes (2)
This website explains all about geodesic domes, who invented them and the mathematics of their construction.