First settled by the Vikings in the 8th century, Aarhus is ideally situated where its namesake river flows into the sea. Today the city is the second largest in Denmark but is called the “World’s Smallest Big City.” It only takes a short amount of time to discover why this is true. While Aarhus is a vibrant port city with numerous attractions, the laid-back atmosphere and friendly locals give it a small-town feel. From the intriguing Viking Museum to the enchanting Marselisborg Castle and colorful buildings hugging cobblestone streets, there is much to explore in Aarhus.