<P> Construction of the mausoleum was essentially completed in 1643 but work continued on other phases of the project for another 10 years . The Taj Mahal complex is believed to have been completed in its entirety in 1653 at a cost estimated at the time to be around 32 million rupees, which in 2015 would be approximately 52.8 billion rupees (US $827 million). 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 . </P> <P> The Taj Mahal 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". Described by Nobel laureate Rabindranath Tagore as "the tear - drop on the cheek of time", it is regarded by many as the best example of Mughal architecture and a symbol of India's rich history . 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 . </P> <P> The Taj Mahal was commissioned by Shah Jahan in 1631, to be built in the memory of his wife Mumtaz Mahal, a Persian princess who died giving birth to their 14th child, Gauhara Begum . Construction of the Taj Mahal began in 1632 . The imperial court documenting Shah Jahan's grief after the death of Mumtaz Mahal illustrate the love story held as the inspiration for Taj Mahal . The principal mausoleum was completed in 1643 and the surrounding buildings and garden were finished about five years later . </P> <P> The Taj Mahal incorporates and expands on design traditions of Persian and earlier Mughal architecture . Specific inspiration came from successful Timurid and Mughal buildings including the Gur - e Amir (the tomb of Timur, progenitor of the Mughal dynasty, in Samarkand), Humayun's Tomb, Itmad - Ud - Daulah's Tomb (sometimes called the Baby Taj), and Shah Jahan's own Jama Masjid in Delhi . While earlier Mughal buildings were primarily constructed of red sandstone, Shah Jahan promoted the use of white marble inlaid with semi-precious stones . Buildings under his patronage reached new levels of refinement . </P>

What is the story of the taj mahal
find me the text answering this question