The account named "Writing Investigator" published an image of the North Atlantic Treaty Organization (NATO) Headquarters in Brussels on April 5, claiming that the design of this facility matches Nazi SS symbols.
After fact-checking conducted by hibrid.info, it has been proven that this claim is untrue and that the design of the NATO building in Brussels symbolizes the concept of linked fingers.
Link to the post published by the account "Investiguesi Shkrimor":

After research conducted through online search engines, hibrid.info has found information published on the official NATO website "nato.int", which provides clarifications about the design of the building in Brussels. (here)
Excerpt from information about the design of the NATO building in Brussels, translated into Albanian:
The design of the new building reflects the unity and adaptability of the Alliance. Its unity is manifested through the concept of linked fingers, while its adaptability is ensured by state-of-the-art facilities, allowing the building to adapt to the evolving needs of the Alliance.
Analyze:
A Facebook account has falsely claimed that the design of the NATO Headquarters building in Brussels resembles Nazi SS symbols.
Hibrid.info has found data about the design of this building, which has been proven to symbolize linked fingers.
Based on the working methodology, hibrid.info assesses this content as "Conspiracy Theory".
Reasoning:
"Conspiracy theories" are considered to be informational content that contains a false or unverifiable description of a phenomenon, event or person, presenting it as part or the result of a secret plan ("conspiracy"). The characteristic of these contents is that they present a series of claims, presented as facts, between which cause-effect relationships are established, without providing any reliable evidence.