A showpiece is:

• An accomplishment which is worthy of display and admiration:

• English Wikipedia's 1,000,000th qualified article, Jordanhill railway station, was called a "showpiece of parallel collaboration."

• An outstanding example of a type:

• Beacon Hill Park in Victoria, British Columbia is considered a showpiece garden.
• The Green Mountain College organic garden with many heirloom plantings has become a campus showpiece.

• A performance or composition which provides an opportunity for the display of a particular skill:

• The Dying Swan was ballerina Anna Pavlova's showpiece.
• Luciano Berio's Sequenza XII is a showpiece for bassoon.

• A work of art or theatrical production presented for exhibition:

• In 1994, choreographer Jerome Robbins created a showpiece for the School of American Ballet based on composer Johann Sebastian Bach's Two and Three Part Inventions.

• In the satiric sense, a showpiece is a charade, a mockery, an empty or absurd pretense.