Arcana (ancient mysteries, magic traditions, arcane symbols, cryptic phrases, constructs, dragons, magical beasts, identify/ record arcane magic, elementals, shadow magic, wild magic)

Note: Identify magic allows you identify types of magic (schools), rituals or magical effects. Record magic allows you to scribe a spell into your spell book.

Architecture and engineering (buildings, aqueducts, bridges, fortifications)

Note: With this knowledge skill you gain Disable Device as a class skill. 

Dungeoneering (aberrations, caverns, oozes, spelunking, underground structures)

Geography & Politics (lands, cities, terrain, climate, people, trade guilds, trade routes, rulers, powerful NPC’s, wars)

Note: With this Knowledge skill you gain 1 Trade Guild or secret society Contact for every 5 Ranks

History (royalty, wars, colonies, migrations, founding of cities, historical myth & legend, ancient cities, ancient people, ancient traditions)

Note: With this Knowledge skill you gain 1 esoteric Contact for every 5 Ranks. An esoteric contact can be a wizard, historian, librarian, secret society member. 

Local (personalities, inhabitants, connections, contacts, laws)

Note: With this Knowledge skill you gain 1 Local Contact for every 5 Ranks. A Local contact can be a barkeep, guardsmen, sherif, magistrate, guildsmen, judge, Innkeeper, shop owner, etc. 

Nature (animals, fey, giants, monstrous humanoids, plants, seasons and cycles, weather, vermin)

Nobility and royalty (lineages, heraldry, family trees, mottoes, court practices & etiquette, royal politics, royal intrigue)

Note: With this Knowledge skill you gain 1 Royal/Noble/ Court Contact for every 5 Ranks

Psionics (ancient mysteries, psionic traditions, psychic symbols, cryptic phrases, astral constructs, psionic races, and psionic monsters, identify powers and psionic effects)

Religion (deities, spheres of influence, mythic history, ecclesiastic tradition, holy symbols, undead, divine magic, aspects of deities)

The planes (Basic Cosmology, Sigil, Outsiders, elementals, portals)

Planes: specific (the Inner Planes, the Outer Planes, the Astral Plane, the Ethereal Plane, Shadow fell, Fey Wild, Pocket Dimensions, magic related to the planes)

Table: Knowledge Planes