A good word would be "oeuvre." For example, one could say:
Romeo and Julietis one of the best-known plays in Shakespeare's oeuvre;
The Adam's House is one the most beautiful structures in the oeuvre of Frank Lloyd Wright.
An oeuvre is a body of work by a particular author, artist, or composer. The word is derived from the French œuvre, literally, work, and ultimately from the Latin opera, which also simply meant work.