Grove Art Online This essay is a good place to explore your topic. Covers the Northern Renaissance too.
The Civilization of the Renaissance in Italy By Jacob Burkhart.
Life in Italy - Look off to the left and you will see several sites on the Renaissance.
Web Gallery of Art - Arranged by artists.
Early Renaissance Arranged by artist; good for images.
High Renaissance Ditto.
The Renaissance Scroll down and you will see a section on art and architecture.
Guided Tours Covers 14 guided tours of the Italian and Northern European Renaissance.
Michelangelo Buonarroti This site is good for biography.
H-Italy Look off to the left and you will see discussion groups for art and architecture.
ARTHIST: h-net Information Network for Art History This site is more general. Use for Northern Renaissance also.
Glossary Useful for Northern Renaissance