It's not entirely known how long ago Trolberg as a city was founded.
In "Chapter 5: The Troll Rock", Principal Magnusson mentions that the school's founder, Edmund Ahlberg, was also one of the great founders of the city. That would mean Trolberg is at most 300 years old. This is further backed up by "Hilda and the Bird Parade", in which a newspaper claims that years Bird Parade is the 256th anniversary. However, in "Chapter 3: The Bird Parade", a flashback about The Great Raven's first visit to Trolberg suggests humans have been living in the area for longer than that. The novel "Hilda and the Great Parade" mentions that Trolberg was founded 600 years ago. In "Chapter 1: The Troll Circle", the Peg legged sailor claims that the bell in the harbor of Trolberg hasn't rung in 300 to 400 years.
The City was build right in the middle of land that originally belonged to Trolls, on top of the ground under which the gigantic troll Amma slept. To keep trolls and other dangerous creatures out, a giant wall was built around the entire city and surrounding land. The construction of the city drove away several other creatures as well, like the Lindworms.
In the early days of the city, the settlement was visited by The Great Raven, who was mistaken for a messenger of the god worshiped by the first inhabitants of Trolberg. This started the tradition of the annual Bird Parade.
Trolberg is surrounded on three sides by a huge wall. The only exception is the bay area at a fjord called the Björgfjord. The maps of Trolberg seen in the Graphic Novels and the tie-in books depict this bay at the south side of the city, but the maps seen in the animated series and Hilda's Book of Beasts and Spirits depict it on the north side instead.
Aside from the urban area. There is also a forest next to the city called the Huldrawood, though it's size and it's exact location within or outside the city walls differs between the animated series and the graphic novels.
A river called the River Björg flows through the city to the fjord. The exact course of this river varies between the various maps seen in the graphic novels, animated series and tie-in books.
The bay contains several islands, including a small one where one of the last remaining Lindworms lives.
There are two mountains on opposing sites of Trolberg called Mt. Hár and Mr. Halldór respectively.
- Trolberg has a harbor at the fjord.
- There are busses in the city for public transport.
- A railroad line crosses the city. Like with the river, the exact course varies between the Hilda media.
- Fifty years ago, Trolberg had it's own streetcart. It is unknown if this streetcar still exists in the time the series is set.
After moving to Trolberg, Hilda, Johanna, and Alfur took up residence in this house. A nisse had previously lived within the house's nowhere space for an unspecified amount of time before another nisse took up residence in Chapter 13: The Black Hound.
The house that David and his parents live in
The house that Frida and her parents live in
Where the Sparrow Scouts hold their meetings, award ceremonies, and more.
|The Ahlberg School||The Primary School that Hilda, David and Frida Attend.|
The statue of a god worshipped in old times by the first inhabitants of Trolberg. It plays a central part in the legend of The Great Raven and the annual Bird Parade. Also Hilda met the lightning bird there.
Trolberg has it's own library.
The harbor, called Björg's Bay in the graphic novels, is located at the shore of the Björd Fjord, at the edge of the city.
Trolberg has a large network of sewer tunnels underneat the city. These tunnels are big enough for a human to walk through.
|St. Guglows Cemetery|
|Trolberg Weather Station||
Located outside the city on top of a mountain, this is from where Victoria Van Gale used to do her reasearch for predicting (and secretly controling) the weather. It got destroyed at the end of Chapter 10: The Storm.
Located in the Huldrawood, this is where the Sparrow Scouts hold their annual end-of-year camping trip.
Where the people of Trolberg can bring their garden waste to be grinded up into mulch.
|Gorrill Gardens||Located next to the wall on the outskirts of Trolberg.|
|Cauldron Island||Located in the bay, this is the only place in Trolberg where a Lindworm can be found. The small island is rich in flowers.|
|Hardware store||Where Johanna temporarily got to work in Chapter 8: The Tide Mice. It sells, among other things, all sorts of camping gear.|
|Railway Yard||The railway crosses the entire city of Trolberg. The current railway company occupaying Trolberg seems to still use steam locomotives for motive power.|
|Light House Farmers Market||A market seen in both the Graphic Novels and animated series, but only named in the latter.|
|Gorill Gardens bell tower||A large bell tower in Trolberg, seen in the graphic novels, animated series and tie-in books, but only mentioned by name in the latter.|
|The Salty Maiden||A diner in the harbor of Trolberg. The Rat King is fond of their fried cod sandwiches, but the local sailors suspect these sandwiches don't actually contain cod.|
|Windmill||An old, abandoned windmill just outside the city limits of Trolberg. Victoria van Gale made it her new headquarters after the destruction of her weather station.|
|Central Belltower||A belltower located in the center of Trolberg. It served as the main control center for the mechanical bellringers Erik Ahlberg had installed in all the bell towers around the city. Nicknamed "The Bottle Opener" in the Hilda Tie-In Series due to it's form.|
|Mirage||Mirage is a nightclub that has been operating for at least 50 years. In his youth Peter Ostenfeld met Matilda Pilqvist here and fell in love with her, but never saw her again afterwards.|
|Jorts||Jorts is a snack company, famous for producing snacks in the shape of shorts. The company plays a key role in "Chapter 11: The Jorts Incident" where the Tide Mice cause it to grow into a multinational.|
|Safety Patrol HQ||The headquarters of the Trolberg Safety Patrol.|
|Trolberg Castle ruins||The ruins of a castle, located in the woods just outside the city. It's dust is a key component in certain magic spells. Named Fort Ahlberg in the Hilda Tie-In Series, but unnamed in the animated series and graphic novels.|
In "Chapter 6: The Old Bells of Trolberg", it is revealed Trolberg has it's own anthem. Only the first few lines can be heard:
Here in old Trolberg, meet the snowy mountain peaks Together we stay safe with our friends and family
The city has multiple festivals throughout the year:
- Bird Parade (all continuities)
- The Night of the Trolls (graphic novels only)
- Trolberg Winter Festival (animated series + tie-in novels)
- Due to the danger that Trolls pose to humans, the city of Trolberg has strict rules against bringing a Troll Rock into the city. According to David, purposely bringing a troll rock into Trolberg is punishable with 50 years in prison, and doing it by accident is good for 100 years (since they really don't want people to do this by accident).
- Since 1892, there is a law that states all bell towers in the city must be equiped with working bells.
- Trolberg has a special task force, the Trolberg Safety Patrol, for dealing with creatures that got into the city. In the graphic novels and animated series, they are the only form of law enforcement seen. The novelization however mentions a Trolberg police force.
- Trolberg has at least two newspaper: the Trolberg Daily and The Oracle.
- Trolberg is heavily inspired by various locations in Norway.