"A typical Neapolitan presepe/presepio, or Nativity scene. Local crèches are renowned for their ornate decorations and symbolic figurines, often mirroring daily life.The practice of putting up special decorations at Christmas has a long history. In the 15th century, it was recorded that in London it was the custom at Christmas for every house and all the parish churches to be "decked with holm, ivy, bays, and whatsoever the season of the year afforded to be green". The heart-shaped leaves of ivy were said to symbolize the coming to earth of Jesus, while holly was seen as protection against pagans and witches, its thorns and red berries held to represent the Crown of Thorns worn by Jesus at the crucifixion and the blood he shed.
Nativity scenes are known from 10th-century Rome. They were popularised by Saint Francis of Asissi from 1223, quickly spreading across Europe. Different types of decorations developed across the Christian world, dependent on local tradition and available resources, and can vary from simple representations of the crib to far more elaborate sets - renowned manger scene traditions include the colourful Kraków szopka in Poland,which imitate Kraków's historical buildings as settings, the elaborate Italian presepi (Neapolitan, Genoese and Bolognese),or the Provençal crèches in southern France, using hand-painted terracotta figurines called santons. In certain parts of the world, notably Sicily, living nativity scenes following the tradition of Saint Francis are a popular alternative to static crèches.The first commercially produced decorations appeared in Germany in the 1860s, inspired by paper chains made by children.In countries
where a representation of the Nativity scene is very popular, people are encouraged to compete and create the most original or realistic ones. Within some families, the pieces used to make the representation are considered a valuable family heirloom.
The traditional colors of Christmas decorations are red, green, and gold. Red symbolizes the blood of Jesus, which was shed in his crucifixion, while green symbolizes eternal life, and in particular the evergreen tree, which does not lose its leaves in the winter, and gold is the first color associated with Christmas, as one of the three gifts of the Magi, symbolizing royalty. On Christmas Day, the Christ Candle in the center of the Advent wreath is traditionally lit in many church services. The Christmas tree is considered by some as Christianisation of pagan tradition and ritual surrounding the Winter Solstice, which included the use of evergreen boughs, and an adaptation of pagan tree worship; according to eighth-century biographer Æddi Stephanus, Saint Boniface (634–709), who was a missionary in Germany, took an axe to an oak tree dedicated to Thor and pointed out a fir tree, which he stated was a more fitting object of reverence because it pointed to heaven and it had a triangular shape, which he said was symbolic of the Trinity. The English language phrase "Christmas tree" is first recorded in 1835 and represents an importation from the German language. The modern Christmas tree tradition is believed to have begun in Germany in the 18th century though many argue that Martin Luther began the tradition in the 16th century.
From Germany the custom was introduced to Britain, first via Queen Charlotte, wife of George III, and then more successfully by Prince Albert during the reign of Queen Victoria. By 1841 the Christmas tree had become even more widespread throughout Britain. By the 1870s, people in the United States had adopted the custom of putting up a Christmas tree.Christmas trees may be decorated with lights and ornaments.
Since the 19th century, the poinsettia, a native plant from Mexico, has been associated with Christmas. Other popular holiday plants include holly, mistletoe, red amaryllis, and Christmas cactus. Along with a Christmas tree, the interior of a home may be decorated with these plants, along with garlands and evergreen foliage. The display of Christmas villages has also become a tradition in many homes during this season. The outside of houses may be decorated with lights and sometimes with illuminated sleighs, snowmen, and other Christmas figures. Other traditional decorations include bells, candles, candy canes, stockings, wreaths, and angels. Both the displaying of wreaths and candles in each window are a more traditional Christmas
display. The concentric assortment of leaves, usually from an evergreen, make up Christmas wreaths and are designed to prepare Christians for the Advent season. Candles in each window are meant to demonstrate the fact that Christians believe that Jesus Christ is the ultimate light of the world.
Christmas lights and banners may be hung along streets, music played from speakers, and Christmas trees placed in prominent places. It is common in many parts of the world for town squares and consumer shopping areas to sponsor and display decorations. Rolls of brightly colored paper with secular or religious Christmas motifs are manufactured for the purpose of wrapping gifts. In some countries, Christmas decorations are traditionally taken down on Twelfth Night, the evening of January 5." wikipedia.org