Deep within the walls of the city, a secret society of rats has taken over the abandoned subway tunnels. They've built their own civilization, with a hierarchy of leaders, a system of laws, and a penchant for all things cheese.
Meet the leader of the rats, the infamous Ratty McBratty, a cunning and ruthless rodent with a taste for the finer things in life.
Want to know more about the rat's society? Visit our Rats and Society page for more information.
Or, if you're feeling adventurous, take a Rat Tour through the tunnels and see the sights.