Huvilakatu, also known as Villa Street, is a charming row of colorful art nouveau houses in Helsinki. Built between 1904 and 1910, these houses feature turrets, decorative gables, and bay windows that give off major fairytale vibes. Despite being criticized back in the day, these buildings are now a well-preserved example of art nouveau architecture. Plus, the backyards open up to cute little alleys, adding to the neighborhood's cozy charm.