All four minarets, eight facades, four pedestal marble walls, interior portion of the periphery up to human height and four 'chhatries' at the rooftop of the main mausoleum, have already been cleaned and treated, Minister of State for Environment said.
The government has brought out a gazette notification, saying all categories of visitors will be charged the additional amount if they wish to enter the main mausoleum, which houses artistic replicas of the original graves of Shah Jahan and Mumtaz Mahal (in the basement).
The top court had earlier asked the authorities to take a larger perspective on issues of pollution and green cover while preparing a vision document, saying there would not get a "second chance" to preserve the Taj Mahal.
"We need to engage them (tourists) more. We can have more light and sound shows, exhibitions and even plays late evening to draw more tourists, it will increase the footfall considerably," an official said.
The seven wonders are - Great Pyramid of Giza (Egypt), Eiffel Tower (Paris), Leaning Tower of Pisa (Italy), Statue of Liberty (the US), Christ the Redeemer (Brazil), Colossuem (Italy) and Taj Mahal (India).
Uttar Pradesh Chief Minister Yogi Adityanath on Thursday paid a visit to the world famous symbol of love, the Taj Mahal, in Agra city. He also participated in a cleanliness drive near the Mughal-era monument.