Origins and architecture of the Taj Mahal AD (1053 AH) the official sources documenting the twelfth Urs give a detailed description of a substantially completed complex. Decorative work apparently continued until 1648 AD (1058 AH) when Amanat Khan dated the north arch of the great gate with the inscription "Finished with His help, the Most High". The Taj Mahal was constructed using materials from all over India and Asia. The buildings are constructed with walls of brick and rubble inner cores faced with either marble or sandstone locked together with iron dowels and clamps. Some of the walls of the mausoleum are several metres thick. Over 1,000
Taj Mahal in the event of an earthquake. In 2011, it was reported that some predictions indicated that the tomb could collapse within 5 years. Small minarets located at two of the outlying buildings were reported as damaged by a storm on April 11, 2018. The Taj Mahal attracts a large number of tourists. UNESCO documented more than 2 million visitors in 2001, which had increased to about 7–8 million in 2014. A two-tier pricing system is in place, with a significantly lower entrance fee for Indian citizens and a more expensive one for foreigners. In 2018, the fee for Indian citizens