This is a stone statue. 
This is a famous stone statue. 
The Pietà is a famous marble sculpture.
Michelangelo made Mary look very young. Some think this shows her purity. Others think he was inspired by a poem. He also made the figures look natural. It is hard to fit a grown man in a lap. Because of this, the sizes are not perfect.
This is the only work Michelangelo ever signed. He carved his name on a sash. 
The Pietà is a famous sculpture made of white Carrara marble.
Michelangelo used a special shape to build the statue. The figures form a pyramid shape. Mary's head is at the very top point. The stone widens as it moves down her dress. The base of the statue shows the rocks of Golgotha. The sizes of the people are a bit unusual. This is because it is hard to show a grown man in a woman's lap. Much of Mary's body is hidden by her large, heavy clothing. This makes the figures look very natural together.
Michelangelo began this work between 1498 and 1499. He was asked to make it by a French cardinal named Jean Bilhères de Lagraulas. The statue was first placed in the Chapel of Saint Petronilla. Later, the chapel was torn down during building work. In the 18th century, the sculpture moved to its current home. It sits in the first chapel on the north side of the new basilica. This is the only piece of art that Michelangelo ever signed.
There are many interesting facts about this marble masterpiece. Michelangelo carved his name on a sash across Mary's chest. He did this after someone thought a different artist made it. In 1637, Pope Urban VIII gave the statue a special crown. This was done through a decree called a papal bull. An artisan named Fantino Taglietti made a crown for it. In 1972, a man used a hammer to damage the statue. He broke Mary's arm, nose, and eyelid. 
This sculpture connects to many stories from history and art. Some believe Mary looks young to show her purity. Others think Michelangelo was inspired by a poem by Dante Alighieri. The statue even traveled across the ocean once. In 1964, it was sent to the New York World's Fair. It traveled on a ship called the Cristoforo Colombo. The crate was so thick it could float in water. Today, the Pietà is protected by a modern glass screen.
The Pietà is a masterpiece of Carrara marble sculpture.
Michelangelo used a specific geometric structure to compose the figures. The sculpture follows a pyramidal shape. The vertex, or top point, of this pyramid is Mary's head. The form widens as it moves down the heavy drapery of Mary's dress. The base of the sculpture represents the rocks of Golgotha. Because it is difficult to fit a full-grown man in a woman's lap, the figures are somewhat out of proportion. Much of Mary's body is hidden by her monumental drapery. This helps the relationship between the two figures appear natural.
There are several unique artistic choices within the work. Michelangelo sculpted Mary to look very young and beautiful. This is unusual because she should be at least 45 years old to match her 33-year-old son. Some believe her youth symbolizes her incorruptible purity. Others suggest he was inspired by Dante Alighieri's Divine Comedy. In the poem, Saint Bernard of Clairvaux refers to her as a "virgin mother." The marks of the Crucifixion are kept very subtle. They include only small nail marks and a wound in Jesus' side.
The history of the Pietà involves many important people and changes. It was commissioned by Jean Bilhères de Lagraulas, a French cardinal. He intended it as an altarpiece for his funeral chapel in Old Saint Peter's. When that chapel was demolished, the statue was preserved. It moved to its current location in the 18th century. The statue is famous for being the only piece Michelangelo ever signed. He carved his name on a sash across Mary's chest. He did this after hearing someone attribute the work to Cristoforo Solari.

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