Masterpiece (noun)

1. A work of outstanding artistry, skill, or workmanship.
2. A work that has been given much critical praise, or is considered the greatest work of a particular artist or creator.

Origin:

Late middle english: from master + piece, translating old french oeuvre maistre.

Examples:

1. The painting is considered to be a masterpiece of Renaissance art.
2. The novel is considered to be a literary masterpiece.
3. The building was a masterpiece of modern architecture.
4. The sculpture was a masterpiece of craftsmanship.
5. The music composition was a masterpiece of melody and harmony.