The subject of this article is a location that has been mentioned "in-universe" in a canon source. The HDM Wiki is written from the perspective that all information presented in canon is true (e.g. Lyra's world really exists); as such, details contained in this article may differ from real world facts.
Amsterdam was a city in Europe. Lee Scoresby went to Trollesund to try and join an expedition that had failed due to lack of funds even before leaving Amsterdam.