Insect poo turning Taj Mahal in India green

Swarms of insects are using India's top tourist attraction, the Taj Mahal, as a toilet.

Poo left behind by the creatures is turning the white marble walls green!

The problem's been caused by insects breeding in a nearby polluted river - and there's been a rise in the amount of them.

Insect poo is leaving green patches on the Taj Mahal

Cleaners scrub the Taj Mahal's walls every day, but there are worries their elbow grease could ruin the beautiful marble and mosaics.

Authorities are looking for a way to solve the problem as quickly as possible.

The local authorities are trying to figure out how to get rid of the insect poo, without damaging the tiles.

"Officials have been asked to investigate as why there is sudden increase in the number of these insects and how to control their population," local official Navneet Sehgal said.

The insects are a type of fly that look like a mosquito.

The Duke and Duchess of Cambridge visited the Taj Mahal in April

The incredible building is actually a huge tomb built by Mughal Emperor Shah Jahan for his wife in the 1600s.

It is visited by millions of people every year, including royalty.