Written by 
Known for its unusual keyhole-shaped entry, the Keyhole House—Nyckelhålshuset in Swedish—is an Art Nouveau residential building in Gothenburg. However, what truly makes it stand out is not just the entrance, but the intriguing sign beside it, which reads: “This house is haunted by a tall, slim, headless man. The ghost is astronomer Arthur Lowell, discoverer of […]
