Austin, Texas is fortunate to be the home of the largest urban bat colony in the world as 2 million Mexican Free-Tail Bats live underneath the Ann W. Richards Congress Ave Bridge in the heart of Downtown. Every night during spring and summer, these magnificent creatures fly out from their roosting places in search of tasty Texas insects. Thousands of people from all over the world visit the Ann W. Richards Congress Ave Bridge every night to witness this amazing sight.