NEW DELHI: The Archaeological Survey of India is likely to restrict the number of tourists visiting the Taj Mahal to 40,000 daily, and put a three-hour cap on each ticket holder to tour the 17th-century Mughal monument in a bid to preserve the heritage site. Culture Secretary Ravindra Singh held a high-level meeting with ASI officials and representatives of Agra district administration and officers of the Central Industrial Security Force, where the decision was taken. ALSO READ - Mumbai: Jignesh Mevani, Umar Khalid meet cancelled by Mumbai Police Ministry officials said that the sale of tickets - both online and offline - will be stopped at the 40,000 mark. The Taj Mahal is considered one of the finest specimen of the Mughal architecture. In 1983, it became a UNESCO World Heritage Site and was cited as "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage.