Børsen (The Stock Exchange) was built by Christian IV in 1619–1640 and is the oldest stock exchange in Denmark. It is particularly known for its Dragon Spire shaped as the tails of fourdragons twined together, reaching a height of 56 metres.
Christian IV had ambitions to turn Copenhagen into a metropolis and to strengthen the city's position as a commercial centre, he wanted a stock exchange along with the new merchant town Christianshavn he was constructing on the other side of the harbour. He asked Lorentz and Hans van Steenwinckel the Younger to design a building in Dutch renaissance with 40 small stalls at the ground floor and one big room at the upper floor.
The building was restored by Nicolai Eigtved in 1745 and internally renovated in 1855. It housed the Danish stock-market until 1974. In 1918, unemployed anarchists attacked Børsen, an attack that went to the Danish history books as 'stormen på Børsen' (the storm at the stock exchange).
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.