It could be worth traveling to South Korea when it involves a Mud Super Slide and a Mud Mega Bath.The Boryeong Mud Festival addresses every mud-related need for days along the beach.
When: 7/17 - 7/25 2010
Where: Daecheon Beach near Boryeong-si, Chungcheongnam-do, South Korea
Why: They claim their mud gets rid of wrinkles and/or adds a decade to your life.
Risk Factor: all clothes in and around the festival should probably be burned later
More info here
