The Creepy Steeple is a location in Paper Mario: The Thousand-Year Door.
As the name suggests, this old mansion is filled with traps and creepy creatures, such as Boos and Swoopers. The fourth Crystal Star is also here, and can be obtained by defeating the master of the manor, the Duplighost named, Doopliss. The only way to get here is to lake the long and winding Twilight Trail, which begins in the nearby village of Twilight Town.
The Creepy Steeple is many a big maze,with a well outside the Steeple where if Mario jumps in, goes underground. This is also a parrot living underground,and is the only person who knows Doopliss's name.