You like bats?
If yes, then go here!
If no, you should go here, only to see not only 10.000 bats leave, but millions of them fly out when dark start to fall.
It is a great experiance and you can see them come out for around 30 min to 1,5h fly out in great shapes
Thay start to fly out around 5:00 – 5:45 every afternoon