The narrator goes to Marconi Street 46 for a specific reason, which is revealed in the story. This location plays a crucial role in the plot of the story, and understanding why the narrator goes there is essential to understanding the story as a whole.


The story begins with the narrator receiving a letter from an old friend, Roderick Usher, inviting him to come to his home. Usher is described as a childhood friend who the narrator hasn't seen in years. The letter is strange and unsettling, and the narrator is hesitant to go. However, he eventually decides to visit Usher.


The reason why the narrator goes to Marconi Street 46 is because that is where Usher lives. Usher's home is described as an old and decaying mansion, which adds to the eerie and unsettling atmosphere of the story. The narrator is greeted by Usher, who is described as being extremely ill and frail. Usher reveals to the narrator that he suffers from a variety of ailments, including acute sensitivity to light, sound, and touch.


As the story progresses, the narrator becomes increasingly disturbed by his surroundings. He begins to notice strange and unsettling occurrences, such as the sound of Usher's sister, who is also ill and confined to her bed, walking around her room at night. The narrator also becomes increasingly concerned about Usher's mental state, as he seems to be descending into madness.


The climax of the story occurs when Usher's sister dies and is entombed in a vault in the basement of the mansion. Usher becomes increasingly agitated and disturbed, and the narrator becomes convinced that Usher is going to harm himself. In a final, dramatic scene, Usher reveals that he has been hearing strange noises coming from the vault where his sister's body is entombed. He and the narrator go down to investigate, and they discover that Usher's sister is not dead, but has been buried alive. In a final act of madness, Usher collapses, dead.


In conclusion, the reason why the narrator goes to Marconi Street 46 is because that is where Usher lives. The decaying mansion is the setting for a dark and eerie tale of madness and death. The story is a classic example of Edgar Allan Poe's gothic style, and its haunting imagery and unsettling atmosphere continue to captivate readers today.