Gothenburg (named after the Gota River) is the second-largest city in Sweden. In the latest Global Destination Sustainability (GDS) Index, Gothenburg was the overall winner with a score of 94 per cent. It was the first city in the world to issue Green Bonds to accelerate investments in climate-oriented solutions. Gothenburg was founded as a heavily fortified, primarily Dutch, trading colony, by royal charter in 1621 by King Gustavus Adolphus. It still has some imposing stone houses in neo-classical style from this period including the East India House, which today houses the Göteborg City Museum. The Gothenburg Film Festival, held in January since 1979, is the leading Scandinavian film festival with over 155,000 visitors each year. In summer, a wide variety of music festivals are held in the city, such as Way Out West and Metaltown. Liseberg is Scandinavia’s largest amusement park and Christmas City Gothenburg, one of Scandinavia’s most popular Christmas destinations, takes place between November 29 and January 6.