According to the details on YouTube:
Six Flags New Orleans was destroyed by Hurricane Katrina in 2005.Beautiful cinematography with a haunting soundtrack by Godspeed You! Black Emperor... makes me want for my next urban exploration.
It has been abandoned ever since.
This film was made in October 2010 by Teddy Smith.
The park is scheduled to be demolished in January 2011.
(via Human Resources with thanks)