Børsen, also known as The Stock Exchange, is a historical building located in the center of Copenhagen, Denmark. It was built in the 1620s and is known for its distinctive spire shaped like the tails of four dragons twined together.

Originally built as a stock exchange, Børsen has been used for a variety of purposes over the years, including as a customs house and as the headquarters of the Danish Broadcasting Corporation. Today, it is primarily used as a venue for conferences and events.

The building's most striking feature is its spire, which is topped by three crowns and four dragon tails that are said to represent the four kingdoms of Denmark, Norway, Sweden, and Finland. The spire is a popular symbol of Copenhagen and is often featured in tourist photos.

The interior of Børsen is just as impressive as its exterior, with ornate murals and woodcarvings that depict historical scenes and figures. One of the most notable features is the Great Hall, which is adorned with murals that depict Danish naval victories and other significant events. The Great Hall is also home to the oldest organ in Denmark, which was built in the 17th century.

Visitors can tour Børsen during certain times of the year, including during the summer months when it is open to the public. It is also possible to attend events at the building, including concerts and conferences.