Karres is a municipality in the district of Imst (district) and is located 2.5 km east of Imst near the mouth of the Pitze River.
At least one scene was influenced by the Royal Nonesuch acting troupe episode in Adventures of Huckleberry Finn, while Showboat World itself has strongly influenced The Wizard of Karres (2004) by Mercedes Lackey, Eric Flint and Dave Freer.
The Wizard of Karres is a novel by Mercedes Lackey, Eric Flint, and Dave Freer that was published by Baen Books in 2004, as a sequel to The Witches of Karres by James H. Schmitz.