Knowledge, Architecture and engineering (Intelligence); Trained Only)

This material is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.

To Knowledge Skill

(buildings, aqueducts, bridges, fortifications)

Synergy

If you have 5 or more ranks in Knowledge (architecture and engineering), you get a +2 bonus on Search checks made to find secret doors or hidden compartments.