Experience the world’s largest urban bat colony emerge from under the Congress Avenue Bridge! This colony made up of 1.5 million Mexican free tailed bats is an amazing sight to see and hear. From the meeting point, join your professional guide at 6pm where afterward, you will paddle and observe one of nature’s wonders and learn about how these nocturnal creatures help create a better ecosystem for everyone. The tour lasts 2 hours and food and drinks are not included.