Google Cultural Institute's feature means that online visitors can explore the building on Streetview and see of in-depth details that are usually too far away in the high ceilings to be seen with the naked eye.
The access is significant because, for more than 1,000 years, the three domes in London's famous Cathedral were thought to show beasts, birds and fish as God created them - however, new technology appears to suggest the images portray something different.
The images, painted by William Blake Richmond in 1890, could appear to depict the theory of evolution.
The cathedral's head of collections, Simon Carter, told The Times newspaper that the mosaic appears to support Darwin's theories about the survival of the fittest - which he said is shown through a depiction of a fish with teeth "fighting for survival."
This will not sit well.