|This article contains canon information corresponding to the Tales of Arcadia franchise. That means all information in this article is true and has appeared/been validated officialy on-screen.|
Heartstone Trollmarket was a subterranean metropolis that is the home of Troll civilization, pulsing with energy and jewel-fueled light, where trolls eat, fight, and down brews in pubs straight out of Viking lore. It is located beneath the town of Arcadia, and the entrance, which can only be opened with a Horngazel, is under the main bridge of the canals.
However, as of "The Eternal Knight: Part 2" after Morgana's defeat and ending the Eternal Night, the Heartstone within Trollmarket has lost all of its power, forcing the remaining trolls to venture to New Jersey to find a new Heartstone.
Trollmarket is a great underground metropolis. It is located several meters underground, connected to the entrance by a long bright crystal staircase. It consists mainly of houses, bridges and trading posts arranged around the rock. There are all kinds of minerals and crystals everywhere that provide illumination. In the center is the Heartstone, the source of life and sustenance of all the Trolls.
Hero's ForgeThe Hero's Forge is the Trollhunter's training room, as well as where all the formal clashes between trolls take place. It is a large arena surrounded by statues (corpses) of the previous Trollhunters. It has various traps and deadly devices that help the Trollhunter to refine his combat skills, activated by diverse manual switches. At the top, there are tiers and balconies where those who witness the matches are located. Below the center is the Soothscryer, which can judge the true spirit of who puts his right hand on it and also connect whoever is summoned with the Void Between Worlds.
The Heartstone Hall is a special room located at the foot of the Heartsone, frequented by Vendel. It is used to heal the wounded as well as to forge and refine jewels and gemstones to bring out its authentic power.
The library is Blinky's special room, used by Jim and the group as a barracks. It is full of all kinds of books, scrolls, and texts about magic, spells and troll history, often used in need of information. Most of these books were arranged by Blinky's brother, Dictatious.
It is a deposit owned by Rot and Gut, who supply the Trolls that go in search of spells, charms, talismans, totems, and diverse magical artifacts.
The Pub is a bar that offers food and drinks service for trolls. It has several tables and bars for customers. It is frequented by all Trollmarket residents and where various meetings are held.
The Gyre station is where they use a special mode of transportation called a Gyre to travel to any part of the world in record time, outside Heartstone Trollmarket's rule boundaries.
Killahead Bridge Chamber
After claiming the pieces of the Killahead Bridge and killing Bular, the trolls placed the bridge inside a highly secured chamber only a troll of Trollmarket may access. The pieces were later shipped out of Trollmarket after Usurna destroyed the bridge, preventing Jim from escaping.
Morgana's Crystal Prison
Unknown to the trolls, Morgana's prison was located underneath their own Heartstone, where she remained awake, plotting her revenge to bring forth the Eternal Night.
After the Gumm-Gumms were defeated in the Battle of Killahead and trapped in the Darklands, the remaining of the Troll race migrated in search of peace. They stowed away on a ship called the Mayflower, along with several Gnomes for companionship and nourishment. They finally arrived at what is now New Jersey and after much searching, they managed to find a new Heartstone under Arcadia. Thus, they found their new home that would be known as Trollmarket.
Part One (Trollhunters)
After Jim Lake was chosen as the new Trollhunter, the Gumm-Gumm Bular went after him to end his life. So, Blinky and AAARRRGGHH!!! took him and Toby to Trollmarket, being the first humans to step on it. Although all the Trolls were reluctant to them, in the end, both were accepted. Trollmarket is frequently visited by them, mainly in the midst of some Trollhunter crisis.
After Bular's death, Claire Nuñez became the third human to reach Trollmarket. After Angor Rot got a Horngazel, he led an army of Golems to invade Trollmarket. With the union of all the Trolls and allies of Jim, Angor Rot was defeated at the end, at the cost of a life of several Trolls, including AAARRRGGHH!!! (who was revived in Part Two).
Part Two (Trollhunters)
After escaping Killhead Bridge, the Troll Tribunal had Jim out on trial for seemingly letting Gunmar out after he went into the Darklands. After Jim is proven guilty, Queen Ursuna was revealed to be behind Gunmar's escape all along and the Gumm-Gumms attacked the metropolis. The Gumm-Gumms started to brainwash Draal and several other trolls to become their slaves. When the Trollhunters managed to get all the remaining trolls to safety, the Gumm-Gumms took over Trollmarket.