The Taj Mahal

The Taj Mahal  is built of shimmering white marble that seems to change color depending on the sunlight on the south bank of the Yamuna river in the Indian city of Agra,India.  Commissioned in 1632 by the Mughal emperor, Shah Jahan (rheigned 1628–1658), to house the tomb of his favorite wife, Mumtaz Mahal. The construction project employed some 20,000 artisans under the guidance of a board of architects led by the court architect to the emperor, Ustad Ahmad Lahauri. It was designated as a UNESCO World Heritage Site in 1983 for being "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage". The Taj Mahal attracts 7–8 million visitors a year. In 2007, it was declared a winner of the New7Wonders of the World (2000–2007) initiative. 

In this history, we had known the romantic gesture of Shah Jahan who was a member of the Mughal dynasty that ruled most of northern India from the early 16th to the mid 18th-century. After the death of his father, King Jahangir, in 1627, Shah Jahan emerged the victor of a bitter power struggle with his brothers, and crowned himself emperor at Agra in 1628. At his side was Arjumand Banu Begum, better known as Mumtaz Mahal (“Chosen One of the Palace”), whom he married in 1612 and cherished as the favorite of his three queens. According to one gruesome and most likely sensational story, Shah Jahan had his minions cut off the hands of the Taj Mahal's architect and his workers after the structure was completed, ensuring they would never build another of its kind.  In 1631, Mumtaz Mahal died after giving birth to the couple’s 14th child. The grieving Shah Jahan, known for commissioning a number of impressive structures throughout his reign, ordered the building of a magnificent mausoleum across the Yamuna River from his own royal palace at Agra. Construction began around 1632 and would continue for the next two decades. The chief architect was probably Ustad Ahmad Lahouri, an Indian of Persian descent who would later be credited with designing the Red Fort at Delhi. In all, more than 20,000 workers from India, Persia, Europe and the Ottoman Empire, along with some 1,000 elephants, were brought in to build the mausoleum complex.

Over the year, under Aurangzeb’s long rule (1658-1707), the Mughal empire reached the height of its strength. However, his militant Muslim policies, including the destruction of many Hindu temples and shrines, undermined the enduring strength of the empire and led to its demise by the mid-18th century. Even as Mughal power crumbled, the Taj Mahal suffered from neglect and disrepair in the two centuries after Shah Jahan’s death. Near the turn of the 19th century, Lord Curzon, then British viceroy of India, ordered a major restoration of the mausoleum complex as part of a colonial effort to preserve India’s artistic and cultural heritage.

Today, some 3 million people a year or around 45,000 a day during peak tourist season visit the Taj Mahal. Air pollution from nearby factories and automobiles poses a continual threat to the mausoleum’s gleaming white marble façade, and in 1998, India’s Supreme Court ordered a number of anti-pollution measures to protect the building from deterioration. Some factories were closed, while vehicular traffic was banned from the immediate vicinity of the complex. 

Sources :
1) http://www.history.com/topics/taj-mahal 
2)http://en.m.Wikipedia.org/wiki/Taj_mahal