Lore: Architecture & Engineering
Lore: Architecture and Engineering represents your knowledge of buildings, aqueducts, bridges, fortifications and moving devices such as wheeled things, windmills, ships and siege machines.
Modifying ability: Intelligence
Classes: Arcane Scholar, Arcane Trickster, Archmage, Bard, Dissonant Chord, Dragon Warrior, Fighter, Frost Mage, Harper Agent, Pale Master, Red Wizard, Shadow Adept, Techsmith of Gond, Wizard.
Requires training: No
Check: Answering a question within your field of study has a DC of 10 (for really easy questions), 15 (for basic questions), or 20 to 30 (for really tough questions).
Use: Usually none. In most cases, making a Knowledge check doesn't take an action. You simply know the answer or your don't.
Special
5 or more ranks in Lore: Architecture & Engineering gives a +2 bonus on Search checks.