Considered one of the “new” Seven Wonders of the World, Agra’s Taj Mahal is arguably India’s most famous landmark — and it’s in danger.

Thanks in part to rising pollution levels, traffic fumes, acid rain, and other environmental factors, the landmark is suffering. Flanked by voluminous piles of garbage, the building’s white marble exterior is covered in a yellow film. As unfortunate as the structure’s degradation is, what’s more devastating is the threat that these same pollutants pose to Agra’s residents.

It has become so bad that many people are even calling for the landmark to be closed to the public. You’ll definitely want to visit this cultural icon before that happens, or before the air becomes too contaminated.