Grizzleheim is one of the worlds that you can choose where you were raised in the pirate101 tutorial. By choosing it you get +10 health on your pirate. Grizzleheim currently is visually present once in Pirate101, at the Grizzleheim booth in Bestia. Besides that, there is also the Grizzly Beast pack in the crown shop. Currently, the Pirate is not able to travel to Grizzleheim, but may need to due to needing to find Ericka The Red.