Why can't I walk into the gazebo/bed/deck/other sculpt here?
I'm having bounding box issues! Help!
Sculpt are designed with a bounding box surroudning them, while at times it is possible to minimize this, you cannot get rid of it entirely. In order to avoid this, you can turn the sculpt phantom. To do this, go into Edit mode, select the check box next to Phantom.
Some sculpts have a larger bounding box than others just because of the shape of them.