Home to North America's largest urban bat colony, which take flight from their home underneath the bridge each night.

Bats Season is Mid-March to Early November The Congress Avenue Bridge spans Town Lake in downtown Austin & is home to the largest urban bat colony in North America. The colony is estimated at 1.5 million Mexican free-tail bats. Each night from mid-March to November, the bats emerge from under the bridge at dusk to blanket the sky as they head out to forage for food. This event has become one of the most spectacular & unusual tourist attractions in Texas.

In the early evening, the largest urban bat population (750,000 - 1,500,000 bats) in North America leave their home underneath the Congress Avenue bridge for a night of feeding. For current information on the best viewing times, call the "Bat Hot-line" at 416-5700 ext. 3636.

The residence of the Bats of Austin.

A great thing to do on Friday night before heading over to the evening's get-together a few blocks away. Go around sunset, which is when the bats leave the bridge to go out for their evening of hunting. It's a pretty spectacular, if not a little smelly, event.