Xarabydun

"Xarabydun, founded in 11 PY, is the headquarters of the Arcanum - a group of scholars, alchemists, and mages who conduct research for the betterment of Dereth. The first human settlement here was below ground, in the Yalaini grottos of Laeraa. Deep inside, Arcanum scholars discovered one of the Seaborne Empire's archives, filled with thousands of Empyrean tomes. These tomes have been the source of many of our advancements throughout the years. In 13 PY, the Arcanum built research facilities on the surface, and many of their finest alchemists, tinkerers, and mages may be found here." --Town Network Sign

Xarbydun was an ancient Empyrean ruin which the Arcanum discovered during the Hollow Victory event. It used to be completely underground, only accessible via portal by those level 25 and under.
In Hidden Vein, the Arcanum Consortium was built above ground from Xarabydun, with NPCs there for various interaction in the Nuhmudira's Boon, Isparian Arms, and Bronze Statues quests.
In Festivus, Ulgrim the Unpleasant wanted to sample the brew in Xarabydun's bar, so, logically, he destroyed the portal and dug a tunnel down to the town. And thus it's level restriction was removed. With various updates to the Harbinger and other quests the Arcanum Consortium has seen more updates.
In Evolution, a new vendor arrived selling directions and ingredients for making Alchemical Throwing Phials.

For the underground section of Xarabydun see: Map (from ACMaps.com)

Portals

Portal gems to Xarabydun can be purchased in the mage shops of the original 9 starter towns, as well as the Master Mages.

To Xarabydun

Location	Coords	Destination	Coords	Restrictions
Town Network	Gharu'ndim (West)	Xarabydun	41.9S, 16.1E	None

From Xarabydun

Location	Coords	Destination	Coords	Restrictions
Xarabydun	41.9S, 15.8E	Town Network	--	None
Xarabydun	41.9S, 16.2E	Xarabydun Lifestone	41.9S, 16.2E	1 - 25
Xarabydun	Sewer Area	Xarabydun	41.9S, 16.1E (surface)	None

Points of Interest

Landscape POIs

Small Creepy Statue - 41.8S, 15.9E

Lifestones

Xarabydun Lifestone Portal (underground)

Dungeons

Dungeon	Coordinates	Wiki Map	ACmaps
Lightless Tunnels	41.9S, 16.2E	--	02C6
Uninhabited Area	41.9S, 16.2E	--	02D2

NPCs

Above Ground

NPC Name	Location	Type	Details
Aino Lunnan-Shin	41.7S, 16.1E	Quest	Gem of Impulse Quest
Alaine the Apprentice	41.8S, 15.8E	Quest	Isparian Weapons Quest
Atamarr	41.7S, 15.8E	Quest	Atamarr Tasks, Gear Knight Construction
Bhab, Arcanum Tinkerer	41.6S, 15.8E	Quest	Bronze Statues Quest, Nuhmudira's Boon Quest
Ciandra, Arcanum Alchemist	41.8S, 15.8E	Quest	Harbinger, Repaired Shadow Stone, Shadowfire Stone Quest, Prismatic Shadow Armor Quest, Isparian Weapons Quest
Hiro, Arcanum Artificer	41.6S, 15.8E	Quest	The Moars, Nuhmudira's Boon Quest
Janier al-Evv	41.8S, 15.8E	Shopkeeper	Alchemical Throwing Phials
Kaytin	41.7S, 15.8E	Quest	Gear Knight Construction
Merkitz ibn'Akadh	41.7S, 15.8E	Arcanum Portalmancer	Direlands Gear Knight Resistance Camp
Nurino	41.6S, 15.8E	Quest	Gear Knight Parts
Scrivener of Creature Magic	41.9S, 15.9E	Shopkeeper	Scrolls, foci
Scrivener of Item Magic	41.9S, 15.9E	Shopkeeper	Scrolls, foci
Scrivener of Life Magic	41.9S, 15.9E	Shopkeeper	Scrolls, foci
Scrivener of War Magic	41.9S, 15.9E	Shopkeeper	Scrolls, foci
Talar the Apprentice	41.8S, 15.8E	Quest	Aerbax's Prodigal Harbinger, Prismatic Shadow Armor Quest
Town Crier	41.9S, 16.2E	Rumors	Provides rumors for free and for pyreal

Underground

NPC Name	Location	Type	Details
Archmage Zarri ibn Khaybi	41.9S, 16.2E	Shopkeeper	Magical supplies
Barkeep Anarn	41.9S, 16.2E	Shopkeeper	Food and drink
Farmer Khurah al-Rujarkir	41.9S, 16.2E	Shopkeeper	Basic supplies
Fazyad ibn Raymar	41.9S, 16.2E	Collector	Collects rat tails
Jeweler Jurraf al-Djiqidh	41.9S, 16.2E	Shopkeeper	Gems, jewelry and tools
Bowyer Hanra ibn Zarib	41.9S, 16.2E	Shopkeeper	Archer supplies
Sifida bint Naril the Scribe	41.9S, 16.2E	Shopkeeper	Books and parchment
Smith Ashaira bint Maisa	41.9S, 16.2E	Shopkeeper	Armor and weapons
Town Crier	41.9S, 16.2E	Herald	Provides rumors for free and for pyreal