Directory sign, spiritual fortress

Quick answer：

A directory sign, also known as a directory board or wayfinding sign, is a type of signage used in public and commercial spaces to guide people to various locations. It typically includes text and, sometimes, symbols or illustrations. A spiritual fortress, on the other hand, refers to a place that is considered sacred or serves as a stronghold for a particular belief system or spiritual community. This term could be metaphorical, referring to the strength or protection a place offers to its adherents.