Not many stock exchanges are topped by a 56m-tall spire formed from the entwined tails of four dragons. Børsen is one. Constructed in the bustling early-17th-century reign of Christian IV, the building is considered one of the finest examples of Dutch Renaissance architecture in Denmark, with richly embellished gables. Its still-functioning chamber of commerce is the oldest in Europe, though the building is not generally open to the public.