A Palladian window is a large window that is divided into three
parts. The center section is larger than the two side sections,
and is usually arched. Renaissance architecture and other
buildings in classical styles often have Palladian windows. On
Adam or Federal style houses, there is often a Palladian window
in the center of the second story. The term "Palladian" comes
from Andrea Palladio, a Renaissance architect whose work
inspired some of the greatest buildings in Europe and the United
States. Modeled after classical Greek and Roman forms,
Palladio's buildings often featured arched openings.