Witchwall
The city where the story take place. It's the capital of the country and it's biggest city. Some of it's importants location include the Windell Tower (the highest building in the city and it's main clock tower), the Windell Palace (the castle of the royal family), the Hill Garden (a small hill in the middle of the city, serving as an important public garden), the SSI offices (the buidling for the secret services and police), the Rosaly Avenue (the central street with many shops, museum and hotels), the Underground (a big space underground with really important heat, with all the "steampunk" mechanism for the city's energy), the Steamy District (the industrial and poor district) and the Wall (a wall at the edge of the city, protecting from the old border with another country). It's also known for it's free tram system.
Secret Service Intel (SSI)
The country's police and detective services, under direct orders of the Royal Family and the Lord Chamber. It's current director is Linna's mother.